Yes, you can do this as given below.
You have to be careful about this. If you ever want to print, you really
want to use the original files. A reduced file size will give you a poor
print.
The procedure below will keep your original files and add reduced size files
in the same folder. You can then copy these on your floppy or CD, but also
make a copy of your original files on a CD so you are protected.
Image Resizing
A. 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) added.
The first time you use it, you may not see Resize image on the opening menu
after you right click on the file or if you see 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.
Also, you can download a free batch converter from here to resize pictures
and edit photos:
http://irfanview.com/