Welcome to the forum!
If you download any of the recent Unofficial Patches or mods for Bloodlines (including the Camarilla Edition mod), there is already a program in the 'Tools' folder called ResPatch.exe. I'm not sure if this is the same program as the one in your link, but ResPatch worked great for me. I have Windows 7 Home Premium, and I run a 16x9 monitor at 1920x1080 resolution. The game looks awesome at that resolution.
(Of course, you need a video card that can support resolutions that high, or the game will be slowed down considerably.)
Just open the program, and it asks where your Vampire Bloodlines main folder is located (small Explorer menu). Then a menu pops up that is pretty self-explanatory. Click the bar on the side with your size monitor (16x9, 4x3, etc.) and then choose the resolution you want (1920x1080 for me). Then hit the "Patch It" button. That should do it.
Hope that helps.