Okay so iv ordered a graphics card the radeon 6950 and i forgot to check mesurements and stuff before i ordered it, its 26cm long and in my case i have about 24 or so where the card is supposed to sit but there is this metal box thing where a HD or somthing is supposed to go, would i be able to just remove that somhow to make room, or do i need to return the card? if so how would i go about doing that?