Hello! I am new (as you can see) and would like to figure out this whole attachment manager/image uploader thing-a-mabob. It's confusing the heck out of me. The few times I've tried it's failed.

From what I've gathered, I should be using this to upload pictures directly from my computer, as opposed to linking from photobucket or any other image hosting site. Now, as I've scanned/taken pictures of most of my sketchbook work (none of it is digital), it's currently living in iPhoto. I'm assuming that the issue is size-related, but I do not know how to re-size images in iphoto.

Basically, I need someone to explain this to me.

Thank you in advance for any help!