Revision Help

I have some drawings which were at Rev A at one time in theirlifebut would like to change them back to Rev -.  Is thereanywayto reset the revisions in the drawings so they start out asrev -,A, B, ect...?  I am in SW2007 and tried to just resettheproperties to dash but when I added a revision latter it went toBinstead of A.

Thanks in advance for any help.

JasonSolidworksDrawings And Detailing