System > File Manager > File Manager Super User Mode
Go to /etc and there should be a file called, Hosts.
Right click on that and chose "Open With" and chose what ever text editor you like.
Enter 127.0.0.1 hit Tab key and paste the offending website's address there.
Save and then close it.
Refresh the page and kiss the ad goodbye! (Sometimes you might have to clear your browser cache).
Answering my own question
To block unwanted ads in SuSE 10.0:
System > File Manager > File Manager Super User Mode
Go to /etc and there should be a file called, Hosts.
Right click on that and chose "Open With" and chose what ever text editor you like.
Enter 127.0.0.1 hit Tab key and paste the offending website's address there.
Save and then close it.
Refresh the page and kiss the ad goodbye! (Sometimes you might have to clear your browser cache).
127.0.0.1 can't be beat!