As I was reading through this thread I was inspired to rummage around my basement to find my first PC... an IBM 600E circa 1998.
I managed to track it down, covered as it was by four years of dust, paint cans, body parts from stray hobos... y'know, the usual detritus we've all got in our cellars. Even found its old Windows 2000 installation disc!
After a thorough cleaning I fired it up, fully expecting at best to need a reinstall of the OS... at worst a loud pop and a quickly spreading fire, but to my surprise it powered right up! It even found my wireless router with the old Belkin card sticking out of its side.
To make a long story short, an sp4, a roll-up, and 90+ regular updates later (all successful 1st shot) it lives. She's a tough old bird. So here's a tip-of-the-hat to MS and IBM for a job well done.