Just a quick question about .NET (which I am not actually deploying apps in as of yet).

I recently had to re-install all the apps on a notebook, after a format and re-install of XP Pro. One of the apps (OmniTrader) which uses NET required that NET 1.1 and also NET 2 be installed. Is this normal, that one app would require more than one edition of NET? I experienced a similar instalation requirement on another NET app.

Is there no backward compatibility with NET? I ask because, I am using a number of JAVA apps, and Java doesn't require multible versions of Java.

Note that I am talking about NET and Java from a user's standpoint, as I don't develop in either.

I guess what I am wondering is this: in about the year 2017, let's say there are 5 more version of NET by then. Would that mean an end user might have 4, 5 or even 10 versions of NET on his computer by then?

Thanks... just curious.