I presume your Toshiba takes AA size batteries?
If so then you need to use NiMH (Nickel metal hydride) rechargeable batteries - ideally 1800mah ones. Most digital cameras are high drain products and using anything but NiMH batteries is next to useless.
Get your self a couple of pack of 4 (one set charging, one set in the camera) and a decent charger and you'll be laughing. Fast chargers are a bit more handy but usually pricier - definitely worth the outlay.
A good place to buy from is:
Internet cameras direct
Or get yourself over to Argos - apparently they have a fast charger for about 30quid. Jessops NiMH batteries should do the job too (check they didn't sell you Ni-Cad ones).