I am having trouble playing almost any "new" Game.

My specs are:

AMD Athlon(tm) XP 2100+
1.73GHz
512 MB of RAM
(not impressive, i Know)

Some errors include:
Your Driver Version is old (6.13.10.2832) The game works better with (6.14.10.5303)
Only supports Graphics Cards With Pixel Shader 1.1 or above.

And it continuly crashes saying system has orroured a sierious error. would you like to send an error report?

i click send and/or don't send. but it just comes up again once its closed, again and again and again and never goes away, it only goes away if you reset the pc.

also another one, saying WinFast A170 Display adapter is not working or domthing like that but it causing problems.

could some one please help

Or does anyone know where i can update it?