Windows dial-up client username problem (W2K)

[lukasz]

All,

When I establish a dial-up connection using my Windows 2000 client, my dial-up username case is not saved.
By default my dial-up username is Xyyyyyyyyyy however I would like it to be xyyyyyyyy.
Which registery key do I need to modify in order for the dialer to cache my dial-up username?

Thanks,

Lukasz