I'm trying to create a worksheet which records elapsed time between Date /
Time Received and Date / Time Delivered. So far, so good. Problem is, the
elapsed time I get really needs to use some form of Networkdays, excluding
Holidays, and (here's the really tricky part) non-work hours. I've tried
fiddling with various Ifs, but am not experienced enough at Excel to grasp
why my formulas don't work.

What I currently have is giving me total time elapsed, which is good:

Received (A1) - 12/30/05 16:08
Delivered (B1) - 1/3/06 9:20
Elapsed (C1) - =(A1-B1) 3:17:12 (formatted Custom - d:h:mm)

The result I actually want in this example is 0:2:12, based on 52 elapsed
minutes on 12/30/05 and 1:20 on 1/3/06 (clock stops between 5PM & 8AM),
excluding weekends, holiday (1/2/03) & overnight hours (17:00-08:00). Is
there any *possible* way to get there from here?

Any help greatly appreciated, but as I said, I'm not all that Excel savvy,
so type... real... slow...