Welcome Screen Logon

Hi all,
I have two computers each running WinXP and one user account with the guest
account turned off. At the Welcome Screen when booting, one of them always
has the password box open ready for typing the password, and the other
requires me to click the account name or tab twice to open the password box.
How can I tweak the one to have the password box open and ready like the
other one? Would this be a registry entry or something in the management
console?
These are both WinXP Pro retail versions.
Thanks in advance!
--
S Petry