There are a number of objects that are based on date. They would be a good start.
THere are also some wallpaper objects. I think Tiggz had a very sophisticated one.

Search the galleries and grab a few. Tear them apart and c'mon back with specific questions. You'll learn a lot more that way.

For the record, I'm not trying to be a smart ass. There are usually two kinds of help available: 1) Help me learn to make cool stuff or 2) make something for me. Both are valid and fair and good. Your question didn't lean one way or the other, so I went with option one. If you meant option two or a mix, let me know and I'll do what I can to assist.   

Create a text object and insert this test script.

Dim display, display2

Sub Object_OnScriptEnter
Call SetWeekday
object.SetTimer 1, 2000
End Sub

'---Call 'SetWeekday' every 2 seconds---
Sub object_ontimer1
Call SetWeekday
End Sub

'---Check Weekday and set object text---
Sub SetWeekday
display= (WeekdayName(Weekday(Date)))
display2= (Weekday(date))
object.Text= display & " " & display2
End Sub


'display' will get you the actual weekday name, and display2 will get you a number representing the day of the week.

For more info on vbscript Date/Time functions go to---W3Schools.com