I am a VB programmer that has gone headfirst into ASP / VBScript.

I have a webpage with a combo list box (populated from querying a database) and a treeview control. I can get the individual elements to work in isolation, but how do I use the value of the combo box as a parameter for the query populating the treeview control?

Can I just reference it direct or do I have to submit it via a form.....

I am using the SAMS Learn ASP in 24hrs - can anyone recommend a better book?

Thanks

Ian