search the file on google and download it there, but you have to regsiter the file otherwise it wont work..here is the fix i copyed it of a thread
Here is how to fix the problem.
1)Get the dll. You can do a Google search or get it from Windows XP. (C:\Windows\System32)
2)Put the dll into your System32 folder on your Vista install. (C:\Windows\System32)
3)Go into the Start menu and search for CMD. When found, right click and press run as administrator.
4)Copy and paste "regsvr32 dx8vb.dll" (With out quotes) and press enter.
5)A message should pop up saying it was successful.
6)Right click the the cam hack EXE and press run as administrator.
7)Load up SA and try it out!
it wokred for me..for some reason the file is missed on vista