Playing a Game In Windowed Mode uses mainboard cpu rather than gfx card cpu?

I'm currently involved in an online game which tends to require me to play the game in Windowed Mode so I have access to the internet/teamspeak etc but it is proving to be hard work on my cpu.

Apparently if you play windowed your graphics card treats the game as a "program" and that causes it to use your mainboards cpu and in general you lose a lot of performance.

I'm not sure if it's true but there is a VERY definite difference when I play fullscreen compared to windowed mode.

Does anyone know if there is a way to force my gfx card to treat the windowed mode the same as fullscreen?

My specs are as follows:

windows XP Pro SP1
ati radeon pro 9800 (cat 4.4 drivers)
1.5GB of DDR ram
audigy 2 soundcard
directx 9b
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onebadmofoAsked:
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CallandorConnect With a Mentor Commented:
Two actual monitors - then you can keep the speed of the full screen mode.
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CallandorCommented:
Does the game support multiple displays?  A second display to use for the team windows is something I've seen in some game setups.
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onebadmofoAuthor Commented:
I does.

Would that need 2 monitors or are they "virtual" desktops?
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