Lou
There are a couple of ways to resize a .jpeg or .jpg. lots of software programs have some sort of reduce size or resize commands. Another way is to lie to the computer and pretend you are emailing the picture. I LIKE lying to my computer makes me feel like I'm in charge (Ha). This is using Windows XP Pro and Firefox as a browser but other operating systems should be pretty close.
Anyhow. Single click on the picture then right click and select "Send To" from the drop down menu that shows up. Next, there should be another drop down selection called "Mail Recipient" or something like that. Click on that selection.
Next there should be a popup window titled something along the lines of "Send Pictures Via Email or Send Mail and one of the selections on that popup is to make pictures smaller. Go ahead an click on that.
Next you'll see an compose email form with the reduced picture in the attachments block, put your cursor arrow over that attachment and it will give the location of the reduced image file. Each OS and browser is different so I can't tell you what it will be but find that file because that is the one that is the reduced size and want to attach.
Jeesh, I've just written the Great American novel trying to describe something that is not hard after you have done it once or twice, sorry if I have confused things more.