Hi Tony
I assume you mean SONAR
Home Studio 7XL?
The first thing I'd check in the projects where you have this problem would be in the PRV (Piano Roll View), or the Drum Map as Alex suggests. Occasionally, MIDI files I've imported into various versions of Cakewalk software (including 7XL) have somehow become transposed on import - usually to an interval of an octave above or below.
To these ends, check the notes are in the right place in the Drum Map. Or try looping a few bars, enter the PRV and drag the notes in the looped passage up and down until they trigger the correct parts of the drum kit you have loaded. Once you've identified the interval, select the whole MIDI track and transpose it all to the correct 'key'.