getting to the web

I have a sparc 20 with UNIX 2.5.1 OS running. I installed everything that could be from the OS disk from a custom install. Now would like to get on the web and I have NO CLUE HOW.
Do I need to install NETSCAPE? And if so what version? I did try to install UNIX 10 but the sparc system did not like the disk I made for my XP-PC, I did down load the correct version I just think the file system is not compatible. Can anyone help I'm just a beginner

thank you
chasman