I have recently build a brand new system with WinXPx64 on it. (to support all my 4GB of RAM). I need to be able to use Sony Vegas 7 and DVD Architect 4, as they are vital to my work. However, during the installation I get bunch of error messages and the end result is that I can't install anything. I firmly believe that it is due to WinXPx64. (if you don't think so please let me know) Is there any way of bypassing the problems and install to Sony apps on WinXPx64? I really don't want to downgrade to WinXPx32 and get only 2.75GB or RAM.
Thanks for your help

Check with both manufactures of the software and see if they are compatible with winxp 64. they might even have patches available.

Check out this Article when about 32bit and 4 gb ram

I have seen some programs using 8gb such as altair which is a cad rendering software on win xp 32bit systems. The boxes only showed 4gb but changing the registry worked and they used all 8 gb.

http://www.brianmadden.com/content/article/The-4GB-Windows-Memory-Limit-What-does-it-really-mean-

I have already contacted the manufacturer about this problem and I await their response.
I will read the article