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Something with 2/1.5g ram would be better though
6950. 580. 170. 480.
All out of your price range
Quadro FX Cards by NVIDIA are officially supported in most professional apps:
http://www.nvidia.co.uk/object/builtforadobepros_uk.html
at 120 the fastest Nvidia card would be best as they co-write drivers with adobe (and the Quadro drivers are often very similar to the GeForce) although there are performance optimisations in Quadro drivers exlusively for Adobe's full suite.
GTX460 is great with quadro 266.45 drivers installed for photo/ video editing