diff --git a/modules/hardware/network/intel-2200bg.nix b/modules/hardware/network/intel-2200bg.nix
index a9069da1e947..382f7b78bd93 100644
--- a/modules/hardware/network/intel-2200bg.nix
+++ b/modules/hardware/network/intel-2200bg.nix
@@ -1,11 +1,34 @@
 {pkgs, config, ...}:
 
 {
-  services = {
-    udev = {
-      # Warning: setting this option requires acceptance of the firmware
-      # license, see http://ipw2200.sourceforge.net/firmware.php?fid=7.
-      addFirmware = [ pkgs.ipw2200fw ];
+
+  ###### interface
+
+  options = {
+  
+    networking.enableIntel2200BGFirmware = pkgs.lib.mkOption {
+      default = false;
+      type = pkgs.lib.types.bool;
+      description = ''
+        Turn on this option if you want firmware for the Intel
+        PRO/Wireless 2200BG to be loaded automatically.  This is
+        required if you want to use this device.  Intel requires you to
+        accept the license for this firmware, see
+        <link xlink:href='http://ipw2200.sourceforge.net/firmware.php?fid=7'/>.
+      '';
     };
+
   };
-}
\ No newline at end of file
+
+
+  ###### implementation
+  
+  config = pkgs.lib.mkIf config.networking.enableIntel2200BGFirmware {
+  
+    # Warning: setting this option requires acceptance of the firmware
+    # license, see http://ipw2200.sourceforge.net/firmware.php?fid=7.
+    services.udev.addFirmware = [ pkgs.ipw2200fw ];
+
+  };
+  
+}
diff --git a/modules/hardware/network/intel-3945abg.nix b/modules/hardware/network/intel-3945abg.nix
index 3344704ba5a6..5468f7bc18df 100644
--- a/modules/hardware/network/intel-3945abg.nix
+++ b/modules/hardware/network/intel-3945abg.nix
@@ -1,22 +1,29 @@
 {pkgs, config, ...}:
 
-let
-  inherit (config.boot) kernelPackages;
-in
-
-# !!! make this optional
-
 {
-  boot = {
-    extraModulePackages =
-      pkgs.lib.optional
-        (!kernelPackages.kernel.features ? iwlwifi)
-        kernelPackages.iwlwifi;
+
+  ###### interface
+
+  options = {
+  
+    networking.enableIntel3945ABGFirmware = pkgs.lib.mkOption {
+      default = false;
+      type = pkgs.lib.types.bool;
+      description = ''
+        This option enables automatic loading of the firmware for the Intel
+        PRO/Wireless 3945ABG.
+      '';
+    };
+
   };
 
-  services = {
-    udev = {
-      addFirmware = [ pkgs.iwlwifi3945ucode ];
-    };
+
+  ###### implementation
+  
+  config = pkgs.lib.mkIf config.networking.enableIntel3945ABGFirmware {
+  
+    services.udev.addFirmware = [ pkgs.iwlwifi3945ucode ];
+
   };
+  
 }
diff --git a/modules/installer/tools/nixos-hardware-scan.pl b/modules/installer/tools/nixos-hardware-scan.pl
index c1d94b939272..73f65a6d83ee 100644
--- a/modules/installer/tools/nixos-hardware-scan.pl
+++ b/modules/installer/tools/nixos-hardware-scan.pl
@@ -4,7 +4,7 @@ use File::Spec;
 use File::Basename;
 
 
-my @requireList = ();
+my @attrs = ();
 my @kernelModules = ();
 my @initrdKernelModules = ();
 
@@ -96,12 +96,12 @@ sub pciCheck {
     # Can't rely on $module here, since the module may not be loaded
     # due to missing firmware.  Ideally we would check modules.pcimap
     # here.
-    push @requireList, "./nixos/hardware/network/intel-2200bg.nix" if
+    push @attrs, "networking.enableIntel2200BGFirmware = true;" if
         $vendor eq "0x8086" &&
         ($device eq "0x1043" || $device eq "0x104f" || $device eq "0x4220" ||
          $device eq "0x4221" || $device eq "0x4223" || $device eq "0x4224");
 
-    push @requireList, "./nixos/hardware/network/intel-3945abg.nix" if
+    push @attrs, "networking.enableIntel3945ABGFirmware = true;" if
         $vendor eq "0x8086" &&
         ($device eq "0x4229" || $device eq "0x4230" ||
          $device eq "0x4222" || $device eq "0x4227");
@@ -202,7 +202,7 @@ sub multiLineList {
     my $indent = shift;
     my $res = "";
     foreach my $s (@_) {
-        $res .= "\n$indent  $s";
+        $res .= "\n$indent$s";
     }
     $res .= "\n$indent";
     return $res;
@@ -210,19 +210,18 @@ sub multiLineList {
 
 my $initrdKernelModules = toNixExpr(removeDups @initrdKernelModules);
 my $kernelModules = toNixExpr(removeDups @kernelModules);
-my $requireList = multiLineList("  ", removeDups @requireList);
+my $attrs = multiLineList("  ", removeDups @attrs);
 
 print <<EOF ;
 # This is a generated file.  Do not modify!
 # Make changes to /etc/nixos/configuration.nix instead.
 {
-  require = [$requireList];
-
   boot.initrd.extraKernelModules = [ $initrdKernelModules ];
   boot.kernelModules = [ $kernelModules ];
 
   nix.maxJobs = $cpus;
 
   services.xserver.videoDriver = "$videoDriver";
+  $attrs
 }
 EOF
diff --git a/modules/module-list.mask b/modules/module-list.mask
deleted file mode 100644
index 10e9f58925ee..000000000000
--- a/modules/module-list.mask
+++ /dev/null
@@ -1,4 +0,0 @@
-# CD-DVD modules are not generic.
-# Avoid all modules from ./installer/cd-dvd/
-
-./installer/cd-dvd/*
diff --git a/modules/module-list.nix b/modules/module-list.nix
index cd37d967066e..9938cc6e1b59 100644
--- a/modules/module-list.nix
+++ b/modules/module-list.nix
@@ -8,6 +8,8 @@
   ./config/timezone.nix
   ./config/unix-odbc-drivers.nix
   ./config/users-groups.nix
+  ./hardware/network/intel-2200bg.nix
+  ./hardware/network/intel-3945abg.nix
   ./hardware/pcmcia.nix
   ./installer/grub/grub.nix
   ./installer/tools/nixos-checkout.nix