LAJ Design has updated DropFrame
(http://www.lajdesignsw.com/dropframe/), a cross-platform application
that allows you to add a picture frame to your images, to version
1.0.4. The upgrade is compatible with Mac OS X 10.6 (“Snow Leopard”)
and Windows 7.

With DropFrame you can either use a computer generated frame or use a
picture of a frame. If you use a picture of a frame, you can decide
if you want to have the frame picture scale to match the image or
have the frame picture tiled to the picture (to keep its original
proportions). Unregistered versions can save a default frame.
Registered versions can save and load frame configurations.

DropFrame is shareware and costs US$12.50 to purchase. The Mac
version is Universal Binary, so runs natively on both PowerPC and
Intel Macs.