Bill Ridgeway wrote:

I have installed -
Microsoft .Net Framework 1.1
Microsoft .Net Framework 2.0 Service Pack 2
Microsoft .Net Framework 3.0 Service Pack 2
Microsoft .Net Framework 3.5 Service Pack 1

I am looking at uninstalling redundant software and I don't know what they
do or whether or not I actually need them. Any advice please?

Those are not different versions of the same .Net Framework. They are
separate programs. You need all of them if you have applications installed
that were built using the different .Net Frameworks. In that case, if you
uninstall .Net, the program using it will stop working.

If you are that cramped for hard drive space it's time to buy a bigger hard
drive, either for the main operating system or for storage. External hard
drives are also a good choice for moving pictures, music, large data files
off the main hard drive.

Malke
--
MS-MVP
Elephant Boy Computers - Don't Panic!
FAQ - http://www.elephantboycomputers.com/#FAQ