It's used to create an absolute cell reference, i.e. one that will not be
changed even when the formual is copied and pasted.
Without the the $ symbol, a formula such as =A1+B1 in cell C1 would be
changed to =A2+C2 if it was copied into cell C2, whilst this is useful if
you're creating a table of information, it can some times be a pain.
By changing the original formula to =$A$1+$B$1, it will not change when
copied.
The above example keeps it entirely intact, you can just put $ signs in
front of some parts of the formula to keep them intact, and have other parts
change e.g. =$A$1+B1, would allow the second cell reference to change with
the location of the formula.
HTH
Neil
www.nwarwick.co.k
P.S. Is your Caps lock key broken? It's considered bad manners to 'shout'