Another question, why do GAMES, WORDPAD etc would ever need a REAL TIME kernel?!?

(Your average program written for a Real Time system is about ten times more difficult to write than for a normal (non-realtime) operating system, and Real Time is needed only for time-critical stuff like life support, machine control, guidance systems etc. Certainly NOT for a text editor or games. (also, RT puts so much overhead on the system that a 300MHZ CPU can barely run 2-3 average realtime tasks, more usually generate exceptions)

Actually, the best way to implement multitasking on '51 is to use multiple 51's, each running a separate task :P