Currently have 3 computers (1 runs Windows 7, 2 run Windows XP) connected to internet via Netgear Router (WGR614ver7) with ethernet cable. Would like to share folders and data between computers, especially to transfer folders from old XP machine to new Win 7 machine. Also, if possible, share printer (Canon MP500) currently attached to the Win 7 computer via USB cable. Can someone walk me through this or point me to external documentation. Thank You.

Share Files and Printers between Windows 7 and XP :: the How-To Geek (http://www.howtogeek.com/howto/windows-7/share-files-and-printers-between-windows-7-and-xp/)

This should help