if you have winzip or any other type of zip file program then you can compress them into a zip file then send

You can use Paint which is included in Windows. Make a set of copies of the pictures you want to send to keep originals intact.
Go to start/all programs/accessories/paint
open a picture ant type ctrl+w; change both percentage to the same amount; then save.

You actually dont have to make them smaller if you dont feel like it. If you want you can use my brothers site to send

files up to 2GB,.. its free and you can use your existing email.