Ok, Newbie question again-tried to figure it out myself but no luck so far.

I type a date in cell Fx and check its value in Qx and if it's egual to a
1(Sunday) then I return a message in cell Kx, "Don't use Sunday start date".
I don't want to write my message in Kx any longer, I want to have a msg box
where the user clicks ok, and it returns user to cell Fx to try again.

I have no clue but do I want a string like the one below (except one that
actually works) and where do I put it - in Kx?


=IF(Q63=1, Msgbox (title:="Don't use Sunday Start"),(Type:=vbOKonly)

Thank you!