Using iMac as an access point?

[spencerwatts]

Is there a way I can network my laptop (windows XP) and my iMac together, and have the laptop access the internet through the iMac's signal (it is plugged in to a cable modem. No wireless routers here ) And maybe be able to use my nintendo DS over the connection as well?



The internet should be accessible to all three. The DS isn't as important as the laptop, though.

Thanks so much!