262164 Uploaded Images resizing wrong

I need someone to help me fix a small problem with my uploaded images. the vertical ones get resized to odd dimensions and the landscape ones are squished too if they are too long. I'd ideally like the images to be resized to 640x480 or 480x640. but proportionally resized not squished up. I also have a little problem with apostrophes not being accepted by mySql database? sooooo if you can help me please respond quickly so my users can get to making their listings better. thanks mark