WS2K8 R2 - Need to install VS2010 for application to run - why?

[I-Su.Yu]

Hi. My application, whose only notable features are the use of
VirtualAlloc() with large pages, CreateThread() and SetThreadAffinity() runs
great on WS2K3. On WS2K8, it elicits a "Program Has Stopped Working" error
dialog but, surprisingly, it runs without error after I install Visual Studio
2010. Since I need to distribute it, I wonder if someone can tell me what
rdist package will mimic the enabling result I get by installing VS2K10? The
leading candidates are:
1. Visual Studio 2010 Shell (Isolated) Beta 1 Redistributable Package
2. Visual Studio 2010 Shell (Integrated) Beta 1 Redistributable Package
3. ???

Thanks.