A variety of ways to do this as described below.  However, be careful when
you do this. If you reduce the size this will be fine for e-mail, web use
etc. but not for printing.

Image Resizing

To decrease the size of the file for e-mail, web publishing, etc.

Go to this site and download the free Image Resizer. Exe file in one of your
folder.

http://www.microsoft.com/windowsxp/pro/downloads/powertoys.asp

Once in your folder, double click on it to install it.

Once installed, you right click on a photo file (or on a group of selected
photo files).

Click on Resize image on the opening menu.

A window will open, select the size you want.

New files will be added in your folder, same name as original file but with
the word (small) or (custom) added.

The first time you use it, you may not see Resize image on the opening menu
after you right click on a photo file or if you see it and click on it, it
may not work.  If so, do the following:

Click on Run, click on Start and type the following in the textbox:

REGSVR32 SHIMGVW.DLL

and press the Enter key.

Note that there is a space between  ...32 and SHI.

You should get a "success" message after pressing the Enter key.

Also, you can download a free photo editing software from here to resize
pictures and edit photos:

http://irfanview.com/

or another free software:

www.faststone.org

From this last one, you can directly e-mail a picture and it will
automatically resize it.

Another free one to do the same is:

www.picasa.com

Picasa has a nice feature to exchange pictures with friends under "Hello"