With 2 PCs and a router you have the distinct possibility of 3 firewalls that could block this. As well as account issues.
I'll note a discussion where a member took the long way around to get a share working. It was firewall related but on top of that they discovered the Windows annoyance about a share needing to be recreated due to the firewall being "up" at the time of creation.
Please read this link.
HP Pavilion Media Center TV PC, Model m7680n
2048 MB Ram
Wireless Keyboard,Mouse and LAN
HP PSC 2210 AIO, hooked to Desktop via USB cable
Toshiba Satellite A105-S4084
1048 MB Ram
120 GB HDD
I have the above system hooked up wirless with a Linksys Cable Modem, model BEFCMU10 and a Linksys Wireless-G Router, Model WRT54G. I cannot get the printer to print from the Toshiba unless it is hard wired to it via USB. Printer software and drivers are loaded onto both systems. When I click Start/Printers & Faxes on both systems it shows each printer, hp psc 2200 series with the highlighted check mark and the word READY. I have Printer and File Sharing enabled on both systems. On the Toshiba Propertys/Ports, there is a checkmark next to DOT...psc printer hp psc 2200 series. The other options are..LPT1,LPT2,LPT3,COM1,COM2,COM3,COM4,COM5,COM6,COM7,FILE,USB,\\H,\\H\\H\\H\\Y
On the desktop machine Port Tab..
Check mark next to Virtual Printer Port for USB hp psc 2200 series
Other option are COM 1-4
FILE Print to Port
DOT psc printer
Something must need to be reset to get printer to print from wireless notebook, but what?