Clearing a stuck spool

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I have an HP 2605dn Laserjet printer connected via Ethernet cable to a Netgear wireless router that is on a home LAN. Two M/Cs (both with XP+SP2; one Pro the other Home) use the printer; the Pro via an Ethernet cable and the Home via a wireless connection.

Both have the same problem: if left on overnight, any subsequent printout usually gets stuck in the spool - it neither prints nor can be deleted. When this happens, the router is still fully operational and both M/C is able to access the internet as normal. Recycling the printer has no effect, but stopping and restarting the spool usually fixes the problem and printout appears fine for the rest of the day, so, to make it as painless as possible I wrote a little .cmd file containing the following two lines:
net stop spooler
net start spooler
It works fine, except that sometimes it also needs me to right-click on the spool icon and hit "refresh". Can anybody tell me how to issue the "refresh" command from within my little .cmd file?

I've given up on trying to figure out why the spooler behaves like this and am quite happy to continue to use the .cmd file, but would like to not have to manually refresh it.

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Regards, Gary Wooding
(To reply by email, change feet to foot in my address)
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