New install, failed to see router

I just re-installed Windows 7 HP 64 and I fouled up in that my router wasn't detected and so I finished up, after I completed the screen asking for user name etc. with a dialup connection!
How do I get rid of this and how do I set up myLAN and select my router?

THanks.

I've been on to HP but...

Problem now solved. I eventually found the Realtek LAN driver I needed!