New to Java

Hello, I've picked up development on an older applet that used to run perfectly on the JVM as well as whatever monstrosity Microsoft put on XP service pack 2. Now that I'm developing on it it only works on the JVM, the MSVM doesn't work at all.

Now, I'm not opposed to requiring the JVM... it just works better. However, the clients this is going to do not really know computers and having all of them install JVM is a time consuming process (they can't bother to read the big text below that says "Having trouble... CLICK HERE").

So my question is... how can I regain compatibility with the MS virtual machine? I'm not using anything that was introduced after 1.3 (I believe), so it seems to me that the problem lies not in the code, per se, but rather in the compiling. I'm using the latest net beans with the latest 1.6 SDK.

Am I crazy to think that of I were to download an older SDK and recompile, it might work again with the stock XP virtual machine?

I, and the overworked tech support guy, thank you in advance.

KBTibbs