I have two drop downs on one page, when one is selected it needs to change to other so that it shows the right information. Also when i load the page i need it too have the data that matches the record selected on load.
You'll have to do this with javascript, if you want to do it without reloading the page. Check out http://javascriptsource.com for more help.
That's right, javascript is here the answer..
write a function (ex. populateList())in javascript and then call it on Body load (onLoad="populateList()") and when the first listbox changes (onChange="populateList()")
greetz, Jan