That card is also known as the old (now very old) Ti 4800 SE, and there is a good reason nothing will install for it, there is zero support for it in Windows 7 (will 7 even work with an old DirectX 8.1 card?). The best you might get for it is the last XP driver
, ForceWare Windows XP/2000 32-bit
installed in compatibility mode, Compatibility Mode - Vista Forums
or manually through Device Manager. Seeing as your motherboard has a PCI-E slot as well as the AGP slot, might be easier to just pick up a cheap PCI-E card that will work with Windows 7 than trying to get that old one working.