I was doing this just yesterday to have a custom logo for my WinPE disk, and I thought that the instructions were just fine.
But I guess if you are not that familiar with PhotoShop that I can see why it might throw you...
I have PhotoShop 7 so the procedure might be different if you have a different version...
1) Open the kernel file in Reshack and save the logo bitmaps, I saved bitmaps #1 & #10, #1 is the main 640 x 480 logo and #10 is the overlay that says \"Professional\"
2) Download the PhotoShop palette file @
http://www.thetechguide.com/howto/xpbootlogo/16.act3) Open the bitmaps in PhotoShop, you should just see a plain black bitmap.
4) From the PhotoShop menus select \"Image\" -> \"Mode\" -> \"Color Table\"
5) In the palatte dialog that comes up select \"Load\" and then pick the \"16.act\" palette file you downloaded in step 2 above.
6) You should now have a 16 color palette loaded in the \"Color Table\" dialog (make sure that you have preview on). Select OK and you should now see the image properly.
Note:
When I saved my edited logo BMP out and tried to load it back into the kernel file with ResHack it said that the BMP file was corrupt. THis is something I have seen before in PhotoShop, I'm not sure if it's just a bad BMP filter on my system or what, but I solved the problem by open the corrupt BMP in PaintShopPro 4.1 (I never upgraded past that version as I use PhotoShop for serious graphic work) and resaved the BMP. That seemed to fix it.
Another Note:
You could of course just use BootXp (
http://www.bootxp.net/) and it will do all the grunt work for you.
But that would be too easy ;-)