There was a previous hint about mounting remote disk images locally, but this stopped working with Jaguar. I recently discovered, though, that you can do it directly from your browser. Paste the URL into your address bar, and change 'http' to 'disk' then press return, and the image will mount in the finder. For example, change this:
http://www.headshack.com/software/chartConstructor/chartConstructor.dmgInto this:
disk://www.headshack.com/software/chartConstructor/chartConstructor.dmg[Editor's note: Neat trick; I tried using Mozilla and Chimera, and both worked perfectly.]
Mac OS X Hints
http://hints.macworld.com/article.php?story=20021111054204885