Well...by "fits" from the previous post, I meant SHOULD fit, I didn't try to plug it but just looked at it and then at the case. I tried to plug it in yesterday, and guess what...doesn't work. I think it's too big or something, or it's just from that metal thingie of MSI that is so big...it's for ATX and my case is M-ATX, I checked everything! It should have fitted! aaaaaaaaaaaaaaaaaa...
Basically...as I can't put it in the PCI cause I need to move it more to the left (to the outside), but I can't move it to the left cause there's no space. I know this metal thing is supposed to be put in these...holes. My English is not my native language so I got no idea how to describe it, but..it just can't fit. An IT guy that I know for a long time will come in a few days and hopefully he'll be able to do something about this...I think so far the only solution is to get the motherboard off, plug it in and then put it in the case. If not...i hope I'll be able to return the GPU and get the smaller (one fan) one.
btw, Merry Christmas!