Split up dual-core processes?

[Gary]

The title may be wrong for the question, but oh well.
I've heard some applications don't use both cores, and because I want my games or high-demand applications to run better and faster, I was wondering if there was an program that can give each core there own tasks.
Much like;

Core 1: System, Virus Protection, windows, (other system related tasks)
Core 2: Half-life2, Halo2 Vista, Halo CE, 3ds, or any program I am running that may need more power.

I thought I heard of something like this on the web, but I couldn't find it, and I'm not really sure what I should search that I haven't already.

Any help would be nice.

-Gary

[DemonicSandwich]

In Vista, you can just open taskmanager, select the process and set "Processor Affinity".
Not sure about XP because I have never had a dual-core that ran XP.

[Aumaan Anubis]

It appears similar in XP.

You have the option of affinity and priority.

You have to right click the process.

[XZodia]

That's only temporary, i.e When you restart the program you have to do it again

[Gary]

Thanks, even if it's only temporary, though, I just ran a HL2 mod, and it ran great, even on high settings.

Thanks.

[Dootuz]

In Vista, you can just open taskmanager, select the process and set "Processor Affinity".
Not sure about XP because I have never had a dual-core that ran XP.

XP is the same.

[Dragonfire]

I use affinity all the time

i got xp64 ^_^