In windows XP
Right click the "File or Folder or Drive" that you want to share.
Then select "Sharing and Security..." option from there give the File/Folder or Drive a name that will then be recognised on both/all PCs (usually the existing name is OK)
Then in the "My Network Places" folder in Explorer, select the "Network Setup Wizard"
You need to do this on both/all PCs that you want to share.
(If both/all of them are XP there is no need to make a disc, just do the same on both PCs.)
Hope this is what you want.
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>> I don't want to hijack oldfogy
I don't mind being hijacked, but if you want a ransom you'll be out of luck.