Alan,
I notice that you have a web site, so you’ve probably got a few Megs of storage floating around unused.
If you don’t maintain your own site with something like DreamWeaver or GoLive, as Ron mentioned, you will need FTP software to do the upload. Do a Google search for “FTP” and you’ll find that there are a whole lot of free software out in the cyber world.
The software instructions will walk you through how to configure it to your server (and other sites, too).
Let’s say your ISP host is named, “EdinboroughRock.net” and your username is “toothfairy” and you want to display an image, “cavities.jgp”.
Using the FTP server, upload “cavities.jgp” to your ISP (EdinboroughRock.net). It will be stored in the space allocated to you under your username, “toothfairy”.
Once on the Grumble, click the image button and when it asks you to “enter the complete URL to the image”, enter, “
http://EdinboroughRock.net/~toothfairy/cavities.jgp” and the image will display.
It sounds more complicated than it is ( … or I just make it seem so). The people who host your web site can be of some help in telling you exactly what the path name needs to be to access your files.