How to explain away a bankruptcy in my distant past?

I need help generating an 'explanation' for my bankruptcy 6 and 1/2 years ago that will not make me look financially incapable to a potential investor. Are there any 'good' explanations for filing bankruptcy that I could use in order to not have this fact work against me? I need potential circumstances that would warrant a bankruptcy and sound reasonable to a potential business partner. More inside... I filed bankruptcy 6 and 1/2 years ago as a financial move to alleviate large accumulated credit card bills that were too much of a burden to handle. It was a LONG time ago, and since I've been very financially capable and have saved over $50,000 while working for the company I've propelled into success. I'm not at all the same person I was when this occurred, but my credit is still marred from that era. Anyway, I have a complex situation approaching where a 'venture capitalist" friend of mine (who's actually my landlord) may be considering investing in a new company that I would run. Part of the arrangement would include a 'creative' financial deal in order to allow me to purchase the house I'm currently renting from him (the 'venture capital' guy). This would definitely prompt my prior bankruptcy to come to the surface. Does anyone have any 'good' potentail explanations/excuses for my filing of bankruptcy that would sound better then 'I wasted alot of money, ended up cornered and bankruptcy was the best option'? I need to remain impressive on all levels, and don't want this horrid mark on my credit to hamper my negotiations. I need possible 'reasons' for bankruptcy that sound reasonable and not incriminating. Any suggestions?