Yes you can.
I have an XP pro desktop, and a win98 laptop.
Setup the desktop:
Go to control panel - system
You'll see a "remote" tab - click on that one
Tick the checkbox "Allow users to connect remotely to
this computer"
*** note, in this screen, you'll see the system name of
this PC. Remember that name ! ***
You'll be prompted to assign a user account.
If the useraccount doesn't have a login password, you'll
be prompted to set this password.
Then, on the xp-home pc, go to start-all programs -
accessories - communications
Select remote desktop connection.
Enter the systemname of the XP-Pro machine (remember?)
and hit enter.
This should get you in.
Bye,
Leo