Access denied could mean,you need to share your printer on the XP box,
right click on the printer in the XP box and click on SHARE
Here is the link to download the patch so vista will see the XP box,
don't forget to download a vista printer driver into your vista box
'Why I Can’t See XP computers in Windows Vista Network Map'
(
http://www.home-network-help.com/vista-network-map.html)
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Brian88135
::AMD Phenom 9500 Quad Core 2.2 GHz::
::8 GB RAM::
::750 GB SATA 7200 RPM::
::512 MB ATI Radeon HD 2600 Pro::
::3600 MHz System Bus::
::Vista Premium 64 bit::