Help please multi boot/drivers  

hi..
recently installed win7 on my 4 year old pc.. everything is fine.. but i discovered that graphic drivers are not installed... so my fav games like cs 1.6 are running in software mode, opengl is disabled. making the game look crap...
so i tried installing drivers from driver cd but it reported "os not supported"..
so searched intel.com for latest drivers... but to my shock.. they said "intel stopped support for your motherboard and win 7 drivers won't be released". my board is
intel D865GSA.
even aero is not working.. . but i dont care about it/ any eye-candy things in win7.. i just want my games(not any heavy 3D games) to look better using my hardware.

so i tried installing drivers in cd with win xp sp2 compatibility mode, which worked installing but reported error "display driver stopped responding. save your work and restart....." within seconds after starting the pc..

i can't roll back to win xp, since this pc is not my own and my parents too use it. and my pc can't handle virtual xp mode with my 1 gb ram :|.

so i decided installing a multi boot win xp with already installed win 7.
the partitions are already made.. but i dont know how to install win xp in multi boot.

can someone please help me with this.. or any other solutions to make my graphic drivers work on my win 7 (like any unofficial drivers)
plzz..need it asap.. i am sick with this crap pc and my parents are not going to upgrade the hardware or buy a new pc.

forgive my english. plzz help.

thnx warrior and pooch for your kind replies..

but i consider multi boot as last option...since that a hard task for me..

@pooch intel doesnt provide drivers for vista too for my board.

plzz tell me if there are any available unofficial drivers or any other solutions plzzzzz

yes.. no drivers for vista.
i dont have an answer for your question.. coz i don know if it is onboard or not...
one thing is... i used to get "intel graphic properties" option on right click and games used to run in opengl mode rather than software mode in win xp after installing the drivers from cd...
but neither happens in win7

really thnx for your quick and useful replies.
but is it possible that "i can multi boot installing win xp, install drivers in xp and play in xp environment with good graphics?" so that i need not convince my dad to buy a new agp card.. -.-
coz i know that finding hardware to my pc is really difficult... it took 3months for my pc shop guy to find RAM for my pc(dont know, he said something like ddr1 type and is not available inn my town).