Hmm....

I'm fussing with making my images larger. ;) Yes- I did it! I...
Saved for web in Photoshop Elements 7
Uploaded into post
Resized in the HTML- how to do this-
Look for /s400/
Change it into /s800/
Change the width and height pixels according to your desired size.

Preview your post- then your done!
Hope this helps someone, and if not, I'll use it as future reference. ;)