Help with SMC7004VWBR wireless router

Real Newbie, here is my system:
-Cable modem 2000kb/s down, 400kb/s down
-SMC7004VWBR wireless router
(Part No. 750.9821_Firmware v1.00.012 (WPA))
-MSI 845GL desktop pc running XP pro(with HP845c deskjet printer-USB)
-Acer 291LMi notebook with wlan running XP home.
Both machines connect to the internet and can use IE without any
problems.

I have 2 questions:

1. How can I share the printer, so that I can print from my notebook?
I have shared the printer on my desktop pc as "hpdeskjet". The deskto
pc and and the notebook are both on the same workgroup JMP-HOME. Using
"my network places",I just can't see the other machine.
can anyone help?

2.Any way of preventing the router from dropping my ftp?
Ftp upload cuts out after exactly 5mins, while on download its
variable. I get a "426 data connection closed"message. Sometimes the
connection restablishes, sometimes not.

thanks in advance!