You're missing those files because .NET 1.0 does not ship on vista (although the placeholder folder will be there). You will need to actually install the .NET Framework 1.0 onto Vista to use it, although 1.1 is probably better, and apps coded directly against the 1.0 location are very, very rare (I can't think of one, but I'm sure someone, _somewhere_ did it once

). As to the other files, pxwma.dll and pxcpyi64.dll are both files from Sonic Solutions software, so if you don't have that installed I wouldn't think it would be a worry (or perhaps they don't install those files on Vista, and use some built-in .dll that now includes whatever those .dll's functionally provide - hard to say). And Dimm.dll is part of the Microsoft multilingual IME, which is part of Vista's multilingual interface components. If you don't have any non-local languages installed other than the language you installed Vista into, not having this .dll installed is also normal.