.Net Compact Framework 3.5 Installation Problem

[Guest thesixfaces]

I downloaded the .cab file from modaco, NETCFv35.cab, but when I install it, it says I need to remove the old version. I downloaded the PHM Registry Editor and removed the old version from HKLM/software/microsoft/.net compact framework. After that, I rebooted my phone and tried to install NETCFv35.cab again. But, it still refuses to work. I've tried numerous different methods, but none of them seem to work. I am using a Samsung Omnia i900. Please help! If you require screenshots please ask me! Thanks!