Sometimes, if you right-click an image in Internet Explorer and choose Save
Picture As, the list of available types in the Save As dialog box will not
contain .jpg, .gif, or .png. It will either contain both .bmp and .art, or only
.bmp.
Here are two procedures that may fix this problem.
To empty your Temporary Internet Files cache
1. In Internet Explorer, click Tools, and then click Internet Options.
2. On the General tab, click Delete Files.
To turn off graphic compression in the AOL client
1. Go to Preferences in AOL.
2. Click Internet properties (or WWW in some versions).
3. Click Web Graphics.
4. Clear Never compress graphics (or Use compressed graphics in some versions).
If that doesn't help:
Courtesy of Kelly:
http://www.kellys-korner-xp.com/xp_i.htm
Start/Run/Regedit
HKEY_CLASSES_ROOT\.jpg - For Content Type, it should read image/jpeg.
HKEY_CLASSES_ROOT\.jpeg - For content Type, it should read: image/jpeg.
HKEY_CLASSES_ROOT\.gif - For Content Type is should read image/gif.
If it already set to that, go to Start, Run and type in: regsvr32 /i
shdocvw.dll, regsvr32 /i shdoc401.dll,regsvr32 webvw.dll and regsvr32
thumbvw.dll (for upgrades). and "regsvr32 /i mshtml"
NOTE: For Windows XP: "Regsvr32 /i shimgvw.dll" and "Regsvr32 /i mshtml.dll"
should fix the "Content Type" values and former command enables the Windows
Picture and Fax Viewer.
Additional information:
http://support.microsoft.com/default.aspx?scid=kb;en-us;810978
Internet Explorer Saves Images As Bitmaps (.bmp Files)
http://support.microsoft.com/default.aspx?scid=kb;EN-US;250747
Right-Clicking, Selecting 'Save Picture As' Does Not Save Image with Correct
Extension
http://support.microsoft.com/default.aspx?scid=kb;EN-US;260650
Internet Explorer Does Not Save Graphics Files in the Proper Format
