EXISTING EDUCATION PORTAL MODIFICATION

Small school portal modification, the vendor contracted for this job made a mess of the whole thing and I need some one who can listen to instructions and work according to our requirement pls. Also looking for a long time relationship. I'll need the portal application accessed, modify according to the requirement, then convert the portal to php so we can easily edit basic information as we so desire. (Pls do have in mind that we already have students data and wouldn't want to loose any data). Find attached files for better understanding and bid after you have gone through all attached files. more information will be sent to the selected bidder. The winner of this project will also be contracted to integrate online exam moodule to the portal so our students can write online exams, (Samples of ERP is highly required for this) Sorry to say there shall be no initial milestone until work is done and completed or have gotten to a satisfactory stage, because I have been on this for couple of years to get the vendor effect these changes but of which have not done anything ever since. This should be completed within 20days, and if am not satisfied with the work, I will cancel and give to another bidder. Send link to sample of previous works in your "PM" Thanks