Wireless presenter with customisable buttons

[Podie]

Slightly odd one this...

I need a wireless presenter for a PowerPoint based presentation - a bit like one of these...



However due to a quirk of another product we are using I need the slide advance button to be configured a the space bar - not a cursor key.

Any idea if there is one on the market that has customiseable buttons (via software)?

TIA

[Podie]

Finally found the Satechi SP-600 that has keymapping software - and works perfectly.