Please help with errors on COD Black Ops!

[Jango]

My computer meets the minimum system requirements to play the game, however in multiplayer, the game often crashes and an error comes up.

Here are the details (from 'Windows Problem Reports and Solutions'):

Description
A problem caused this program to stop interacting with Windows.

Problem signature
Problem Event Name: AppHangB1
Application Name: BlackOpsMP.exe
Application Version: 0.0.0.0
Application Timestamp: 4cdb84f2
Hang Signature: 66a6
Hang Type: 2048
OS Version: 6.0.6000.2.0.0.768.3
Locale ID: 2057
Additional Hang Signature 1: dbc326ffb1f307b1cd7196adfb258d21
Additional Hang Signature 2: cbe5
Additional Hang Signature 3: 09e44c886af53db7d3f73148213c1a48
Additional Hang Signature 4: 66a6
Additional Hang Signature 5: dbc326ffb1f307b1cd7196adfb258d21
Additional Hang Signature 6: cbe5
Additional Hang Signature 7: 09e44c886af53db7d3f73148213c1a48

I would be very happy if someone could help me with this issue or give me advice. Thanks.

 

[Jango]

Thanks for your help.

Update your graphics driver to the latest version, and run the DirectX updater on your install disc (or download one from Microsoft)

Try that and see if you get the same crashing.

Is >this< what you mean by 'DirectX updater'? If not, then please can you post a link to the 'DirectX updater' you are talking about?

 

[Jango]

If I reinstall Black Ops, does that mean I will have to do the campaign again and start online from level 1 again?

EDIT: Also, I don't think I have 'Catalyst'. I'm not using an ATI gfx card.