WOW httpwebrequest doing my head in :/

Ok, so ive decided to try and learn httpwebrequests, Read a lot of threads, pages ect across google.

Have made a couple posts here about parts im stuck with and no help.

This is a new problem im having, i made a webrequest to logon to a site, like you click a button and it logons, then another button i click to grab some info.

Basically the request is done and it posts my logon info and then logins correctly.

Then i go to another page in that site to grab some info but its asking to login again :/

I thinks its because i have to request so the second request to get asks to login even tho im loged in on the first request :/

Any help on this would be great

Thanks