Perhaps something along these lines ..
In Sheet3,
Put in the formula bar for say, B1:
=INDEX(Sheet1!$F$1:$F$1000,MATCH(1,(Sheet2!$A$1:$A$1000=Sheet1!A1)*(Sheet2!$D$1:$D$1000=Sheet1!B1),0))
then array-enter the formula by pressing CTRL+SHIFT+ENTER
(instead of just pressing ENTER)
As-is, the array formula can then be copied down col B
to return correspondingly for other pairs of look-up values
in Sheet1's A2:B2, A3:B3, etc
Adapt the ranges (eg: Sheet2!$A$1:$A$1000) to suit.
Ranges must be identical in size,
and we can't use entire col references (eg: A:A, B:B, etc)

Signature
Max
Singapore
http://savefile.com/projects/236895
xdemechanik
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> Hi guys,
>
[quoted text clipped - 16 lines]
> Thanks guys and gals!!
> Deb