asp.NET is adifferent animal to asp3

its events driven OO, etc.

it uses events that are fired in an order as the page  loads ( remember flush .. this is flush with bells on)

look in help for actual order or the way controls/pages events are fired . No - the best way is to set up a skeleton project and do a load of response.writes to write out the order for you. Add some ascx controls to your page and write out responses for all the events you plug in ... and the one you'll use most will probably be pre_render.
Briefly ... page load, control_load, page_prerender, control_prerender, plus events inbetween. You just goot aget to knwo how it all works and EXPERIMENT.

though querystring works just about the same ... so what's the problem  exactly ?