XNA frame work 3.5 framework, need help

[Gecko]

I have tried half a dozen times to upgrade XNA 3.1 to the 3.5 sp1 version without success. I understand I need this upgrade to run Openrails. I keep getting a message that I need to turn windows features on or off. I've tried, but in the check mark box it tells me only some of the options are running, and therfore will not install whatever I need to upgrade 3.1 to 3.5. The XNA frawork only shows as running 3.1 in the uninstall menu. I am running a dell studio xps, intel i7 cpu. 8gb ram. ATI radon HD5700 graphics card, Windows 7ultimate. Any help would be appreciated. really want to run Open rails!
Thanks: George

[slipperman]

Hi George,
It's .Net Framework 3.5 SP1 you need to install - XNA Framework 3.1 is OK!
Just click the links on the OpenRails download page : http://www.openrails.org/release.html

Cheers,
Ged

[Gecko]

Thank you, maybe someday I'll learn to read, comprehenshion on the other hand will stay in left field.