I would suggest a mirror image of that - so the butt of the gun is on the left of the barrel - otherwise you'll end up with a large windowed area directly above the nothing to see here area taken up by the DVD drive and the fan shroud - mirroring it will let you see a little more board in both corners...
Current Projects: Lobo | Unimatrix | High Voltage | Antec 900 Revamp (Phase 2)
Completed Projects: General Lee | Synergy Green | Liquid Yellow
Planned Projects: K-9-PC | Limey
Not sure if this'll make it clearer but.... your original idea....
And mirrored
Current Projects: Lobo | Unimatrix | High Voltage | Antec 900 Revamp (Phase 2)
Completed Projects: General Lee | Synergy Green | Liquid Yellow
Planned Projects: K-9-PC | Limey