All the bits which you listed will help diagnose the problem
Graphics name,manufacturer,ship type,DAC type,current Display Mode or Monitor
As far as I can tell the IBM ThinkPads vary vastly in their quality.
If you just click "Save all information" in the dxdiag screen, and then attach it to a post, it will save you having to write down all the specs and we will see what can be done (if anything).
I have a feeling that Starcraftman may be right and that you need a new computer, however I would be willing to make sure that there is no other alternative for you before I commit to that statement.