seeking for way(s) to analysis updates of information window

[longxx]

Basically,

Let's imagine I have a window with active feed, (such as a MSN window)

I want to read the *new* feed,

so for example,

when I receive "start", I do some action,

but I do not want to close the MSN window, so the "start" stays there, and when another "start" comes in,

do the trigger again, obviously I can't use while 1.. wend, because there will be many "start"s there. and will keep triggering the commands.

is there a way to do this? I can think of some crazy way such as define the whole window info into some variable and compare them every time, but that seems a lot of work and there should be an easier way....

thanks!!