Having Issues with .Net Compact Framework

[kdps105]

Ok First off I have been gone from the forum for about 6 months and was carrying a Blackberry Curve (I know I know don't flame me), but i am back with a new Touch Pro and I love it. Now my problem: I have a couple of different programs that require .Net Compact Framework 3.5 and every time I run them I get the usual error. I have downloaded .Net Compact Framework 3.5 and tried to install it on my pro. I then get this message that 3.5 already exists on my device and it wont install. I am pretty good at figuring out my own problems but I have no idea on this any help is greatly appreciated