That must be tough for you.
Seriously now, if you want people to help you're going to need to be a little more useful. At what point does the error come up? What version of Windows are you running? What version of CF?
Have you even tried searching for this before? Because I just Googled "windows error 193" for you and the third hit is *these* forums with someone asking the same question. Why not just reply to that thread rather than starting a new one?
If it's not a valid Win32 application then something is probably corrupted. Download it again, check the MD5 and install.