Arduino, PC, Ethernet, and VB

I haven't had much of a chance to play around with any of the code yet but I can answer some questions. I have tried the HTML version of control and I did get that to work with my Arduino. I guess one thing I am wondering here though is how can I implement a momentary button action while using Ethernet communications. From the small amount of web experience that I do have I believe a webpage is more like an on/off switch. Is that correct? I am assuming I could probably build in some kind of delay but it would get old having to click the button many times to keep something like a light on.

I do not have much experience with an Arduino so far and am trying to learn more everyday. I will attempt to work on the ideas mentioned above this weekend but if anyone has ideas of how I can implement a momentary style switch instead of an on/off switch it would be greatly appreciated if you would share your thoughts or ideas.