in the welcom message how to get the sysdate and the username

i want to configure the welcome message for the new newer ,and its content like this :

subject: welcome to here !

username :

how do you do ! welcome to here .

best regards to you!

system administrator

date

i want to know how to get the new username and the date ,thanks for you !

[331 byte] By [robote] at [2007-11-26 10:56:21]