I got tired of entering the password of the account I use to connect to a shared device (a folder) from Windows XP Home Edition (this version does not have enabled the “remember credentials” button in the connect to network drives window).
So I decided to search a way to get rid of that, and its pretty easy:

Net use L: "\\COMPUTER\Shared Folder" /user:USER PASSWORD

You only need to create a .bat file (a text file but changing the extension to .bat) with that linea (adapted to your case) and add it to the Start-on-boot stuff of the PC.