INSTANT MANTIS > i have mySQL installed on my system,

[aptsadi]

i am using instant mantis & i have mySQL installed on my system,
when i m starting "imstart" file , it is giving me an error "Could not open required defaults file: \my.ini
Fatal Error in defaults handling." & the program gets aborted.
i want to use the same mySQL for instantMantis: because i m using mySQL in other applications as well !!!!!

plz help me how can i configure it >>>>