D-Link wireless ADSL2+.Details please.
What modem? How is is connected etc. etc.
Opened Safari preferences but could find no options link.Please explain.humm If I understand right, you might want to check your Safari Options and see if it will connect when opened. I'm not quite understanding what you mean though
Am using WEP.Firefox also will not connect when Safari refuses.Are you connected with WPA or WEP? Does it only happen in Safari, or does Firefox work?
Definitely not an ISP problem.Have been in contact with them.This sounds like a connection problem and not a browser issue. Who is your ISP?
Automatic software updates run.Have you run software update and downloaded the latest software updates for your computer?