Retrieves a user data record object without affecting the currently active user. Pass in a PK or Username and Password. GetUser always returns a record unless the record cannot be found. Use Logon to check for Active and Expired status.

This is a lower level method that is used to retrieve user records. You should use Authenticate in most circumstances.

Syntax:	o.getuser(lcPK, lcPassword)
Return:	.T. or .F. If .T. the oUser member is set. Doesn't work with NT Authentication.
Parameters:	lcPK | lcUsername Pass in either a PK or username to look up. lcPassword If a username is passed above the password must also be passed.