JK Man. Is you computer a Gateway? It would all depend whether Gateway uses standard sized mobos or not. If it doesn't, it would not fit without some modding.
The standard size is called ATX. This site shows what the size and screw lay out is for standard ATX. Check it against your's. The case you linked to supports standard and micro ATX. So if your board is one of those it will work.
The funky thing is sometimes manufactures such as Dell and Gateway use non-standard sized mobos....