janine, I believe in reincarnation..
a few days before my brother was born, my grandfather's best friend came in my mother's dream and asked if he could come stay w her. a few days later, my brother was born. in a meditation session, i went into past life regression and found that i was my grandfather back to look after my mother. (i had always been the 'adult' in my parents relationship.. long story)
it does make sense to us, my brother and i are very close, good mates...

i think your dad might have come back as your ds. look out for characteristics!