Is there an effects pad or something of the like that will take an acoustic-electric guitar's sound and turn it into a electic guitar's sound? I remember seeing someone do that with an electric-acoustic guitar somewhere...
If its just a plain acoustic guitar you have (not an electro-acoustic) then your best bet is to get a shadow pickup. I have a Seymour Duncan pickup (not sure what model as it doesn't actually say) that fits into my Fender DG-4's sound hole which can then be connected to any effects pedal or amp. I ran mine through my pedal and into my amp and used it as an electric while I was waiting for strings to arrive and it worked pretty well.
Alternatively, you can buy my Squire Fat Strat off me seen as I'm upgrading to an Eric Johnson Signature Strat soon