The KiXtart "Use" is not the same as DOS "NET USE", so no, it won't pause and prompt for a password.

You must do the work yourself if you need a password.

Attempt the mapping, and if the error return indicates a security problem prompt for a login and password, and attempt the mapping again.

Here is some pseudo-code:
code:
Connect share
While @ERROR = "Wrong security credentials" AND NumberOfAttempts < 3
   NumberOfAttempts=NumberOfAttempts+1
   Prompt for Username
   Prompt for Password
   Connect share using username and password
Loop