Can anyone recommend a picture editing program that I can resize several pictures at once?

something like linky

try a search for a 'batch resizer'

hth Roger

Irfanview is great for batch processing

Do you have Windows XP or Vista ?

You already have the tools to hand.

Highlight all of the files.
Right click and choose to email them to someone.
You will be offered the chance to batch resize them.
It will be done and they will be attached to an email.

Save them back of the email and ditch it.

Job done.

Takes seconds.

Zilspeed.
I've got XP but I cant get what you say to work.
I highlight the pictures,right click mouse,select email pictures. I then get a message saying this is not a personal file.

search for xp powertoys, install image resizer, right click and resize!