No kgeek, I don't buy that, all AMD 64 bit dual CORE processors follow the x86 architecture.
Now regarding the DAVE,a 16 bit graphic application. WinXp support 16 bit gfx applications due to lack of gfx libraries. It has nothing to do with processor type. By the way, try to run DAVE under NTVDM. This is a process that windows provides 16 bit emulation dos equivalent to a win 3.x. The only problem is it doesn't provide direct access to memory and hardware. So those apps which require direct access to mem or h/w won't run. And i strongly feel this will encorporate the gfx apps
Now Mr Friendster what else have you tried to make the app run?