Wondering if theres an app that allows you to use the WiFi on the bold as an access point for other devices to use 3g? I'm thinking using a laptop with no usb cable or an iTouch over WiFi. Anyone got a definitive answer?

If you want to use a laptop without the USB cable, just use Bluetooth.

I haven't heard of an app to do that. There is an app called PDANet that does what you're talking about on Windows Mobile, PalmOS and iPhone, but not for BlackBerry. There's also Joiku Hotspot for Symbian phones.