Searching for a Graphics Card

I'm playing some high-end-graphics games and I need to upgrade my graphics card. Currently my Dell computer runs on an integrated 64MB card that sucks. I'm looking for one with a minimum of 128MB, but there are a few constraints that are imposed by the type of tower I have. In the owner's manual, it lists the specs for my expansion bus as the following.

AGP: APG 1X, 4X, 8X
AGP Connector: one LOW PROFILE
AGP Connector Size: 172 Pins
AGP Connector data width maximum: 32 bits

I don't have a PCI express slot, (though I do have a PCI slot, but I have heard that PCI cards aren't as good) and so far I have spent many hours looking for a low-profile, 128 or 256MB, 32 bit, AGP graphics card to no avail. Maybe you guys know of some site or place to get this. Thanks!

 

there is a new nvidia low profile 6600 GT card out was in some mag or other
cost £127

 

There is also a XFX low profile 6600 Standard which can be had for £70