without pics i can't really envisage what your stand is like. just remember your tank is gonna weigh around quarter of a tonne, so make sure you do the stand right or it's gonna bust and that's a stink as thing to happen to you and your fish.
if you want a cheap, safe fish tank stand, make a cinderblock and timber stand. cheap as chips, no fuss, always comes out level, provided of course it's on a flat surface. having a flat, solid floor to put the stand on is quite crucial. if it has to go on carpet, i would suggest laying down planks of 6x2 for the cinder blocks to sit on.
ALWAYS put polystyrene under fish tanks!
here's a youtube vid of somerandomguy making a cinder block stand.