Python32.dll not found

Hello i have a problem, i have been using blender for a while i have 2 computers one with windows xp service pack 2 and another one with windows xp service pack 1 and both use 32bit. The one with pack 2 runs blender perfectly but the other one with pack 1 doesn’t i mean when i try to open blender 2.5 or 2.62 i get an error saying that python 32.dll was not found but when i check the files python 32.dll is there. Can someone help me? does it have to do with the version of windows xp?
kind regards,