Hi,
ASP.NET 3.5 is a subset of 2.0 so usually when you see .NET 2.0, it is really .NET 3.5. You should ask your host to clarify which version of .NET they have available for you. If they only have 2.0, you should look for different hosting because mojoPortal requires 3.5 SP1 or 4.0.
My company, i7MEDIA, offers great hosting rates and we are experts in all things mojoPortal!
HTH,
Joe D.