Our WebCombo already support load on demand scenario, perhaps you could try using such scenario in order to improve the initial page load.

We already have articles regarding Load on Demand in the WebCombo documentation, such as "Advanced Load-on-Demand data retrieval through ISDataSourceControl support" and "Walkthrough: Using load-on-demand data retrieval with ISDataSource control in WebCombo"

A sample has also been provided on the page LoadOnDemand.aspx

I didn't buy ISDataSourceControl and I won't be buying it just for one use. Can this be done using other standard controls? I have the stored procedures to achieve this. Can this ISDataSourceControl control be bundled with my webcombo purchase?

You could subsitute the ISDataSource control with ASP .NET ObjectDataSource. The steps and method required will be quite similar with the the ISDataSource article provided in the previous post.

Attached is the modified sample using ObjectDataSource

Is there a way of doing it with stored procedures instead of creating scemas?

The article Advanced Load-on-Demand data retrieval through ISDataSourceControl support, in the WebCombo documentation, mentioned that we need to supply GetData and SelectCount method for the Load on Demand scenario to work, which will also work for ObjectDataSource. You could use stored procedures to retrieve the data in the GetData function.

Unfortunately, this method will require you to create schema for the datasource.

I need step by step help on how to produce the whole load-on-demand model pertaining to my project. Can I have a live one-on-one chat with the expert on this subject  so that someone could help me accomplish this?

We have a live chat available during our working hours. You could read about this support in here. The page also has a link to start the Live Chat.

I tried constantly yesterday for one hour or so an I never got in. The page stayed on "processing the request" forever.

The processing request message is shown when non of our live chat personel is currently available. Please request the live chat in the allocated live chat time, Monday - Friday from 8AM - 5PM (GMT+7) . Beside thos hours you could send your issue to the this public forum or if your issue contains sensitive information, you could send the issue to technical@intersoftpt.com