OT: Notebook OS

[Makinus]

I recently bought a noteboo that came with WinXP installed, but i´m thinking about installing Win98 instead and i wish some opinions of people that know more about these operating systems. But first my notebook configuration:

Processor Via C3 1.0ghz
256mb Ram (shared with video)
30gb HD
DVD/CDRW combo drive

What i wish to know is if, in my notebook, Win98 will be faster than WinXP and wich OS would be a better gaming plataform...

While i do use my desktop computer with WinXP and it is a good enough plataform to play the majority of the new games (Doom 3, Evil Genius, Port Royale 2, etc.) i noticed that my notebbok is a lot more slow with these game and the only diferences from the desktop is the processor (1.0ghz instead of 1.2ghz) and the video card (onboard 3d shared memory card instead of a Geforce2 64mb), and i wish to know if, installing Win98 in my notebook i will be able to play games in it like Evil Genius with a better speed...

My doubt started because in the Readme of the game Evil Genius i see that they appoint 2 different minimum hardware configurations, one for WinXP and one for Win98, and the WinXP one is heavier than the Win98 one, so, this means the Win98 needs less hardware to give the same performance of WinXP, or i am missing something?

I would aprecciate any opinions and hints to help me to decide to stay with WinXP or install Win98 in my notebook...

Thanks in advance...