how to make vcd from .mpg using toast

[abhishekit]

ok..i am using toast 6.0.3

whenever i m trying to burn a .mpg file , first it says 'converting to PAL'.., evn though i had given 'NTSC' as the prefernce...anyways...after that it gives the error
could not record disk because there is a problem with source material
result code =-18774
anyone knows whats happening...in the 'getting started with toast' guide, it says it would make a vcd from any format quicktime recognizes..and i can open this .mpg file in quicktime.....
any comments are welcome..
thanks..

Edit..message edited