wireless security question

I just had a airlink 101 super G wireless router added to my emac running 10.4.10. I was assured that this is a secure network and that I dont have to worry about any one breaking into my computer and stealing any information from it. Just one question, can I go ahead and type passwords, use bank and credit card information without worry or is it possible that some one can intercept the wireless signal and steal my info.

You should be fine, but to be sure, what security settings are used on the router? WPA2 is the most secure right now.

Most of this data isn't stolen over wifi. Make sure that you use secure sites, and only give out this information to legitimate sites.

Thanks for the info and help.