HOW TO: Install LATEST ATI CATALYST drivers

Question

So ATI/AMD doesn't consistently update the "BootCamp" drivers and as a gamer I want utmost performance out of what I have (of course without OCing). Therefore, I went searching for a solution and found it and I will explain it here, step by step. Forgive me if this has already been posted. Note that I did this in XP and NOT Vista.
1. Download the latest CATALYST drivers from here:
http://game.amd.com/us-en/drivers_catalyst.aspx?p=xp/radeonx-xp
2. Open the driver software as if you were going to install it and let it extract to its default directory. Take note of what that directory is as you will need to know that file path for later. Once it extracts it will move on to an installation. Stop/cancel the installation the first chance you get.
3. REMOVE your currently installed ATI drivers. There are two ways to do this:
-1. If you downloaded the actually CATALYST Software Suite, there will be a program in the folder to where it extracted called "AtiCimUn" that will remove your drivers.
-2. Google "remove ATI drivers" and I think it's the first link that tells you a detailed step by step method of removing the drivers.
4. Restart after successfully removing the drivers.
5. Download MobilityModder here: http://www.driverheaven.net/modtool.php
-If you scroll closer to the bottom of that page, there will be a download link AND instructions for the PROPER method of installing MobilityModder.
6. Run MobilityModder
7. Browse to the directory where the drivers are installed.
8. Click "Modify"
9. When the modification is complete, close MobilityModder and Right Click on "My Computer" then click on Properties
10. Click the "Hardware" tab
11. Click on Device Manager
12. At least one device should have a yellow circle with a black question mark in it. For me, Windows saw it as a "VGA Controller". Right click it and click "Update Drivers"
13. It will ask you some stuff about if you want Windows Update to look for drivers, say "No not this time" and click next
14. Select "Install from a list or specific location{Advanced) and click next
15. Select "Don't search, I will choose the driver to install"
16. Click on the "Have Disk" button
17. Browse to the folder where the ATI drivers were extracted to (MobilityModder will have rewritten the modified files to the same location)
18. The specific file you are looking for is a Configuration file whose icon looks like a white notepad with a yellowish cog that has some metal rod going through it. Click on it and click "open"
19. At this point Windows should recognize which card you have specifically, if not, it will have the entire list of cards that driver can update. If you run into that, just find it in the list.
20. Let windows copy the files, if it tells you that the drivers are not digitally signed, say "continue anyway". It's just an effect of the MobilityModder modifying the files and since it doesn't have a certificate, it's not considered signed.
21. When it's done click finish.
22. Restart
23. Happy new drivers
I'm thinking you might be able to skip the MobilityModder part and just skip straight to directing Windows right to where the drivers are instead of having to mod the files. I'm not sure if it works because I haven't done it but you're welcome to try. If it doesn't work it just means you have to use MobilityModder.
I hope this helps.

Answer 1

Update: After using the method described above the drivers did install successfully however, when I loaded some games I noticed that they did not take up the whole screen. No amount of changing the resolution solved the problem.
So I completely removed the drivers and loaded unmodified drivers. I had to find my x1600 from the list and there were actually two but I just took the first one. I let Windows copy the files after warning that it can't confirm they were for my hardware. After a restart I tried my games again and they were taking up the whole screen as they did when I had BootCamps outdated drivers.
So I can say that you CAN skip steps 5-9 (the steps for the mobility modding). You'll just have to find your drivers and some of them do show up multiple times. I'm probably going to try the other x1600 listing just to see what happens. I'm not sure if there's a difference between the same listings (mine was Radeon x1600 followed by another Radeon x1600) but I'm assuming there is or else ATI would put so many >.<