My computer is strange

As subjected, i am running vista 32 bit but forfor some reasons I can see 7 gb ram installed - -

been reading and looks to me that 32 bit only support max 4gb

might be because i did install 64 bit , flash bios - then format my pc re-install 32 bit (coz 64 bit work like hell with wow)

any idea ? Not sure if I should flash bios. I am using Asus p5k-se/psu btw.