Can't share HP printer

>> I am trying to share an HP 722c printer which is
>> connected to my desktop running WinXp.Home Edition. I
>> upgraded the desktop to WinXp. I have a laptop running
>> Win98. Before the upgrade, I was sharing the printer
just fine through my Linksys router. My laptop can
see the pc, folders and the printer but I cannot print
over the
>> network from the laptop running Win98. The printer
>> prints fine directly from the pc with WinXp. I ran the
>> wizard on both computers. When I try to print a test
>> page from the laptop, nothing happens. When I try
to install Win98 additional driver on the desk top
with XP, I get an error message indicating that the
driver is not digitally signed and cannot continue,
will not install. The printer is properly
shared. The printer is visible over the network
but I can't print to it. Thanks.

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