Thanks again, but I have yet another question. I'd like to use a wildcard in the block name, since all the blocks have the same name, but are prefixed by a number (i.e. 1_revblk__000 would be for an a-sized dwg, while 2_revblk___000 would be for a b-size, and so on and so forth). I can't use wildcards with this, so how can I create a list of the blocks, and then search only those on the list. Thanks again for your help.