If they are no good I would get something like this. Logitech Z313 2.1 Speaker System with Wired Control Pod Remote - 25W RMS - Ebuyer
Something with a 2:1 Subwoofer you can put under the desk. Years ago I bought one similar to that one above to play jamming backing tracks to compete with my guitar amp (100w) and it literally shakes the room and the windows. Drove Mrs D bonkers. I have a proper set of Monitors now and play everything through them via the PC but I was blown away by how good the original 2:1 speaker set was.