I installed

redhat 7.0 3 days ago, i instaleld it in a virtual machine, with vmware, everything its ok, but when i start using the internet, first, if i visit downloads.com the site for downloads, it only shows the first yellow bar and nothing else, yahoo does not give problems.
The problem starts when i enter (i dont know if i can say the url, cuz it could get considered as advertising, but since its a linux site maybe is ok) when i enter linux.org.mx the title bar says the real title but nothing shows in the body of the page, and if i try other url, it doesnt work, not linux.com, yahoo.com, nothing, if i close netscape and try to reopen it i does not open again, its pretty weird.
I wish u could help, Thanks