You have a lot of ways to do it, being this the easiest one. Check it please:

1. When being in a gallery, look for the white mark in the top right of the black window of flash. Drive your mouse to it.



2. Once you do that, a panel will open from right to left, with several options that allows you to do several things, like pause the slide show, see full screen or increase/decrease the speed of the show AND to DETACH the image, as shown on the next image. Select THAT option, precisely



3. Depending on the configuration of your browser, a new Window (IExplorer 6.0 and similar) or Tab (Firefox, Opera, Tablane, Netscape, IExplorer 7.0 and others), like on this image:



There you can save the image as usual: right click your mouse and select "Save Image as:" or ""Save Links as:" or whatever your browser says

Using Firefox you can even use the "Down them all" add-on directly on the gallery and that saves you a lot of time
(that's why I love Firefox!! even more when the trouble with WMP 11 its fixed )