Dual core 'optimisation'? System feels similar to my A64 3500+

[DarkShadow]

I have a C2D and to be honest I have no idea if I should be installing soemthing or similar as it feels similar to my A64 3500.

All I've done it installed xp with updates slipstreamed, installed a couple of driver form asus website.

What can I do to get the most out of Dual cores? Should I start setting affinity's? I can see two graphs in task manage but I'm not sure if that suggests it's had a patch installed?

My previous system was:
A64 3500+ @ stock
1GB Geil Ram

Now I have:
E6300 at stock for the moment
2GB Crucial Anniversary kit

I can only feel the difference in games which I'm not overly pleased with

I'm almost certain I'm doing something wrong.

 

[DarkShadow]

PS: Setting processor affinity actually reduces performance. Do not use it for anything but compatibility purposes.

Really?

I read somewhere that it was a good idea to do so!

It's a single core not X2 btw