Add upload capability to existing html

I have created a php page that displays pairs of photos as follows. Initially, the first photo in each pair is displayed in a row, at 225px x 150px Clicking one of these photos will display the image paired with it in the right column at 645px wide, and however high it needs to be. The functionality I want added is for one user to be able to: 1. Upload photos to replace an existing ones in the appropriate location. 2. Upload photos to create new pairs. 3. Delete one or both photos in a pair. There won't be a lot of pairs, so I'm not sure if a database is the best approach or not. Fixed price of $30.00 I know what this takes, so don't submit crazy high bids. That only shows you didn't read the specs here. Attached is file of existing html