VBS to map a drive AND save credentials

not your typical "map my drive" -
 
I have visiting users that I need to give easy access to windows server shares and printers, so I have made a web server on the lan where they can download mapdrive.vbs
 
Problem being - I dont want to store a "startup script" on these computers, but I do want them to have access when rebooting without re-running the script - I was assuming bStoreInProfile would do this, but it seems users no longer have access after a reboot on Windows 7 clients.
 

 WshNetwork.MapNetworkDrive "s:", "\\server\MyShare", bStoreInProfile, "someuser", "somepassword" 

 
I can easily do a bat script that does this:
 

 net use s: \\server\myshare somepassword /USER:mydomain\visitor /persistent:yes 

 
thanks -j
 

That parameter is intended to keep the mapping persistent. Just out of curiosity, where do you set the value of bStoreInProfile and what do you set it to?