If you have been having difficulty deploying your application to other machines (not the one you built your application on)then you are probably having problems with deploying the SxS binaries.
For resolving such issues, here are some details from the VC++ Libraries Team: http://blogs.msdn.com/aymans/archive/2006/04/04/568466.aspx
Hope this helps!
Thanks,
Ayman Shoukry
VC++ Team