Hiya Maddi,
I also use Netbeans, and have found problems with emulators before but never really a problem with Nokia emulators.
Maybe if you tried the current version of netbeans - v4.1 or even v4.2RC2 which is on the netbeans.org download area - you might have more luck.
If still no luck, you could try the netbeans users list (send a blank email to
[email protected] to subscribe). Sometimes you have to post a request more than once, but when you do get an answer it is usually very good.
Also with netbeans, there comes in the bundle J2MEWTK22 and I put my old Series 40 Nokia emulators into that - which works fine for me.
Cheers,
James