Link building / forum posting

I have a college oriented website that I'm in the process of launching. The website is www.collegeresourceexchange.com. I am already having it optimized and have links being built. However, I want to have someone spend time and find college-oriented forums and post messages informing people about the launch promotion. The launch promotion is a video creation promotion. Person must be web-savvy enough to figure out where college students hang out online, or where people who want to create videos hang out. All you have to do is create a user account and post a message on the appropriate forum, so you don't have to request links. This might be college discussion forums as well as video sites dedicated to college videos. You will have to document where you post your messages. I will work with you to craft the exact message to post. I'd like a quote for 50 initial posts as a trial to make sure you understand what I want. If I like your work, I will likely have you continue. Please note again - this job is simply for posting messages on college oriented and video-oriented discussion forums, not necessarily full blown link building on websites. Thanks!