Can anyone help me find the right graphics card for my pc?
I have a HP Compaq dx2400 microtower.

I need a graphics card that has atleast 256mb 2.0 vertex shader and pixel shader and also hardware TnL
Sorry i meant HP Compaq Dx2420 MicroTower.If the information I've found is correct and that computer is still unmodified from the original specs, it should have the following free slots:

1 x PCI - full-height
2 x PCI Express x1 - full-height
1 x PCI Express x16 - full-height

The PCI and PCI Express x16 slots should both be ABLE to take a video card. For better performance, get a PCI Express card. Some cards require that the power supply provide power directly to the card, so you will need to check that your power supply has the appropriate connector or that the card comes with an adapter (most do).

Any kind of budget on this?first of all THANKS for the reply, and AROUND £50, the computer is unmodified and i need the graphics card for gaming like the witcher, gothic 3 mabye crysis or not.Check the position of your PCI Express 16x slot on your motherboard, make sure that there is sufficient space around it to put a card in and that there is nothing in the slot next to it.

Pretty MUCH any of the cards listed on this page. You might call HP support at 1-800-474-6836 to verify with them that the card is compatible, as I can't find anything more specific about the slot in that board other than it's a PCI Express 16x slot, but not if it's 1.0, 2.0, or 2.1. The list of cards I've POSTED is for 2.0 cards.