I tested the card today in another laptop and it works fine. My slots must either be broken or I have a driver issue on the laptop.
If anybody happens to see some PCMCIA drivers for a Toshiba Portege 3440CT then I would really like to know

All the ones I've tried don't help.
Do you think if I went into DSE to 'buy' a replacement wireless pcmcia card they would let me test it first?