Recordkeeping is my downfall

Well, not my only downfall, as pointed out by my faultless record of no earnings over the past couple of years, but that's a subject for another post....

No, here is the problem I'm running into....
I've built a ton of sites over the years, (since around 1994, actually) and a few of them have been.....well.......lost. In many cases, they are subdomains located in subdirectories of my webhost. Landing pages in one directory with an incomprehensible name, linked to thank you pages on a completely different web host and a product delivery script....somewhere...

I recently looked through one of my notebooks and found several pages of setup data on a site that has been long forgotten by me, passwords, nameserver addresses, MySql databases, affiliate links, tracking links etc, etc, etc.

My question is this...given the sheer volume of need-to-know stuff associated with each and every site you create, does anyone out there have or know where I can get a spreadsheet template or some sort of script that will help me track where I put things?
I'm sure that I could create one, given enough time, but I hate to reinvent the wheel.

Anyone? ........Bueller? ..........Bueller?