Excel 2007

This is driving me nuts, primarily because I know that I've done this
before, but I just can't seem to zero in on the solution today, and I
haven't been able to find it in my other files. I need a formula that does
the following two things:

1) If the current day is a Friday, put the current date
2) In all other cases put the date of the *next* Friday

I seem to remember that this requires a combination of the DATE(), DAY(),
NOW(), and WEEKDAY() functions. I also seem to remember that the solution
*may* include use of the MOD() function. Anyone have a way to do this?

--Tom