I agree with Drizzt, it sounds like your browser is blocking pop ups. Which browser do you use; Internet Explorer, Firefox, Safari, etc? I use Firefox and on some sites it blocks pop ups but when it does, I get a yellow bar up by the tabs telling me something was blocked. When I click on the bar, it gives me the options of continuing to block from that site, temporarily allow pop ups from that site, or always allow pop ups from that site.
Another reason for not getting the manage attachments button to work is that you have an older version of a browser and may need to upgrade. Also, I know it sounds silly, but sometimes certain settings will cause the pop up window to appear behind the one you are currently viewing and you'll never see it unless you minimize the main window.
Hope this helps and if you still have issues, you can always get a free photobucket or other photo-hosting account, upload your pic(s) to them, and just add the img code to your regular posting. This would also save this forum from hosting the pic(s) and and save them space and bandwidth.
Hopefully soon, we'll see pics of your collection.
