Computer Freezes with RW on Vatsim!

I run fs2002 full-screen with Win98. Quite often when flying with SB and RW on Vatsim, if I am told to contact a different controller, and for whatever reason RW cannot connect to the server that is identified, my computer will freeze and requires a complete shutoff and re-boot.I think I know part of the problem. RW has a popup box when it cannot connect to a server. Because I am running in full-screen mode, I cannot switch to the RW popup box to close it. If I try alt-tab to get to windows mode everything freezes, as does ctrl-enter.Does anyone know a way around this? Perhaps a special keyboard combination (not alt-tab) that will "unfreeze" the computer or otherwise allow me to get to that RW popup box. Or, perhaps a way to stop RW from even using such a popup box?Any help would be appreciated. This is really frustrating. RW's manual and support leaves a lot to be desired.Damon