blender slows down, then ultimately crashes - when i parent the mesh to an armature. not sure what the problem is. thought it may be the graphics card. not sure.

my system:

ALL - IN - WONDER Radeon 7500

Drivers version is 6.13.10.6218 with driver date of 11/7/2002.

Running on Windows 2k with 1.2 Dual processor with 512 MB of RAM.

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any queries for this video card?