XP Pro, Vista and XP home networking

I currently have a desktop pc with XP Pro running, I have a laptop with vista
networked wirelessly, eveything works no problem however I then setup the
network so that the XP Home laptop is on the network, I can see all drives
and browse folders as should be however when I go to add printer that is
connected to the XP Pro pc. I browse over the network select the network
printer, I run a print test from the laptop, hooray it prints but when I go
to print a document from the laptop and try to print it I get an error 'The
handle is invalid'.

By doing the the print test from the laptop and it working the connection is
there but I cannot work out why a job will not queue up on the printer.

I am at the stage where I am pulling my hair out and I dont have much left,
any help apprediated.