ASP.NET/SQL DB Website Simple Coding Change

on my ASP.net website with sql database I need someone to modify coding on 1 or 2 files so that my site will display an alternate image on certain pages. I will explain the details after you contact me with your interest. should be a quick 30 minute to an hour project for someone that knows what they are doing, but do not quote me on that. Please message me and I will give me you my site name and specific thing that needs to be done, then you can figure out how long it will take you to do the project and give me a bid. do not bid until i have told you the details of my site and project details.