Technology Help Needed

So today I bit the bullet and shelled out the money to buy the maximum-100 userpics, and then I went to the various icon communities to which I belong and saved a bunch of really pretty icons to my hard drive. Now, I know all these icons are in jpeg or png or gif format because LJ doesn't support bitmap, right? And what I do is, right-click on the icon and choose "save picture as" and save it to my icon folder. But every single time I save one, the only option I'm given for format is bitmap. So they all end up being saved as bitmap icons, and then I have to ask my husband to convert them to jpeg so I can upload them to my userpics on LJ -- because while they're in bitmap format I can't bring them in to my journal.

So what am I doing wrong? It seems to me like there's some weird setting on my laptop that only gives me the bitmap option while downloading. But I'm so technologically challenged, that's just a guess. Peter isn't familiar with LJ or icons so doesn't really know what's going on either.

I double-checked my theory by looking at the properties of some of the icons I wanted to download and they were definitely identified as jpeg files on LJ.

Anybody have any ideas? What the heck am I doing wrong?

Thanks, y'all!