Vista - Sharing Printer from Vista x64

I have a desktop running Vista Ultimate x64 that I'm trying to share a HP Photosmart 7760 to several laptops. One laptop is running Vista Home Premium 32bit and the other two are running XP 32bit.

When I try to connect any of the laptops to the shared printer it says the server for the printer does not have the correct driver installed. It then gives you the option to install the printer driver locally. The problem is all of these laptops already have the printer installed as the printer used to be shared off a XP desktop. So if the print driver is already installed, why are they having an issue connecting to the printer?

I've tried installing the 32bit drivers on the host machine but it just ends up reinstalling the 64bit drivers. If I try to add the driver manually it wants to look for an inf file and I can't seem to find the correct one.

Any idea's on this? The printer driver package on HP's website is the same for 32bit and 64bit Vista. If I try to install the XP printer it just ends up installing the same 64bit driver.

I'm a little frustrated....

edit: Ok, I've got all the XP machines running fine by locally creating a port and all thatl. Now when I try to connect the one other Vista machine(32bit Home Premium) it just gives me an access denied when trying to create the port. I have everything set correctly as far as firewall and sharing settings and they're all on the same workgroup. It has PCcillin on it but I have completely disabled it and still get an Access Denied.

Anyone know what to do from here?