Fuzzy/unreadable TV when I connect to PV

Hi people, i CONNECTED MY VISTA TO MY FRIENDS WIDE TV using a small connector,( about the size of the old modems). The directions say no driver is needed but I can't read the font to setup for him. Of course it's Vista so going by the icons isn't much help. I've never hooked a PC to a TV before. Vista is using generic plug n play driver (at least I could get that far working blind! lol. Any help would be greatly appreciated. Josh

Thanx Wolf. I think U hit the nail on head. The Guys at bestbuy said the 5 year old tv may not handle it (resolution). They suggested I try a newer cable, I think it was HDMI. If it doesn't help I can get a full refund. I apprciated ur quick responce. U sent me in the right direction.