I'm a bit confused

Hello fellow aviators,
Sorry for asking this, but before I download an aircraft stipulated FS2002 PRO , is it compatable with my stadard version (FS2002 STD)????
Also, Frame rates - can some one give me a breif description on how this affects the simulator and to what setting it should be for the following;
Pentium III (806)
384 Mb Ram
Nvidia Riva TNT 64 Video Card
Creative Vibra Sound card.
I've found that since setting up my Microsoft Voice controller everything is running slower, Any tips???
Look forward to hearing from you
Regards
SV2003
Sorry for asking this, but before I download an aircraft stipulated FS2002 PRO , is it compatable with my stadard version (FS2002 STD)????
Also, Frame rates - can some one give me a breif description on how this affects the simulator and to what setting it should be for the following;
Pentium III (806)
384 Mb Ram
Nvidia Riva TNT 64 Video Card
Creative Vibra Sound card.
I've found that since setting up my Microsoft Voice controller everything is running slower, Any tips???
Look forward to hearing from you
Regards
SV2003