Wireless Ad-hoc

Situation:

I have a network of 15 computers and with 2 printers connected by a peer-to-peer network. I want to be able to share at least one of those printers (which happens to be connected to one of the 15 puters by USB) with any that has a wireless connection. I connected an wireless adapter to said computer. I set it to only connect to ad-hoc connections and gave it the same IP it has on the wired network. It will not allow me to share, but I was able to print from it with 2 different laptops with wireless cards once each. Now when they try to print they get a message that they do not have access to the netwok though the ad-hoc is shown as being used in their wireless network lists.

Any ideas on why this is or how to properly set up my ad-hoc network?

Thanks
Goshi

From what I have seen ad-hoc networks have more problems than infrastuctured network. So instead of setting the wireless adapter for ad-hoc mode, I would use it to set up a structured wireless network.

In ancient times they had no statistics so they had to fall back on lies

I don't know how to ping another computer over a wireless connection. Is there an XP utility or do I need to dl something?

I understand that the easiest way to do what I want would be to buy an wireless router but I'm doing this for a lab at school and don't have much in the way of funds. I'm hoping I can create access for wireless laptops to a wired network printer. I have an wireless adapter that was given to me and that's about it.

Well, I was able to ping both computers. I assigned them both IPs and now it seems to be working. The computer on the existing network just has two IPs now, one for each card/adapter.