can't start InstantMantis-1.0.8, error \my.ini

[mantooz]

Starting Apache...
Could not open required defaults file: \my.ini
Fatal error in defaults handling. Program aborted

xp os

[fman]

Try:
start "Instant Mantis MySQL" /B /D%MYSQL_ROOT%\bin mysqld --defaults-file=%MYSQL_ROOT%\my.ini --standalone --console --basedir=%MYSQL_ROOT% --datadir=%DATA_ROOT% --port=%MYSQL_PORT%