Hey guyz i have a problem... i have a gamming rig..which is not so powerfull ...i brought it last year...i had purchased 4 gigs of crossiar ram ..ie ddr2 ... now i wanna increase my ram ..but i cannot get the same ram modules in the market ..i had purchased corssiar xms2 ..and it is not available ..is it ok to use another 4gb of ram but from another company ie transand etc...??? .. will it screw up my machine or ram or anyother thing ....plz help .. let me know if u want more info on my machine ..thankx in advance...