ASP.NET 2.0 server-side control

Wanted: a simple ASP.NET 2.0 server-side control, that can make use of the MS AJAX framework RTM and version 10301 of the AJAX control toolkit if necessary. The control will take in a list of items, presumably as List<string>. On the client it will display these items as paragraph elements in a div; the elements will be scripted using javascript (hence the AJAX framework) so that new elements added during the last postback appear as the top element on the list, shunting the bottom most element out of the list. If multiple items are added in one postback, they will be displayed at intervals on the client with the behaviour described above. The intervals and total number of elements displayed should be configurable as properties in the aspx file, and through code, and the interval should be updateable during postbacks. The control must also be tested to work inside an AJAX update panel. It may even require an updatePanel to work if that is necessary. The deliverable will be in the form of customisable source code, with server-side code written in C#, that can be integrated into a standalone assembly, or directly into a website. The provider will be expected to support the control in its original form until integrated; customisation away from the original behaviour by us is not expected to be supported. We would like the task to be completed swiftly and we will pay via Paypal within 3 days of delivery. We will have a number of small projects to be completed in the forthcoming weeks and are keen to build relationships with competent freelancers. Please do not bid if you have poor English language skills.