My First Thoughts
I used to be undecided on this issue until God began revealling to me what His word says, also I used to refuse to believe in inheriting the guilt of Adam's Original Sin.
Click here to read an email I wrote to the same guy on how I initially agreed with Calvinism. (This is the first of the two I wrote)
Click here to read an email I wrote to the guy discipling me on how I came to believe the Doctrine of Original Sin.
These were both written in October/September 2000 (I knew much less then than I do now).
I still think that we shouldn't use Psalm 51 as a proof text for Original Sin - use Romans 5!