sorry if this post is totally dumb but i am new to the world of digital cameras!

i am looking to post some photo's on the critque page but files are too big.

i read from a search engine that you have to 'save as', click on 'options' and change compression.

unfortunately from all the phot packages i have i cannot do this. i have the following packages . (also which is the most user friendly to edit photos?)

adobe photoshop 2.0
photo impression 4
eos viewer utility

thanks alot for any help