Windows XP / Apache / CF7 & CF8 side by side
Most ColdFusion people run their development environment using Windows XP and Apache, since IIS for XP allows a single site -- IIS for Vista allows multiple sites btw. I personally run VMWare and I have separate vms for cf7 and cf8, but if you're one of those who already has everything set up and want/need to run cf7 and cf8 side by side, check out Tom's article explaining step by step how to get it done.
http://www.robgonda.com/blog/trackback.cfm?FAF4738E-9EE9-E7ED-00939387B87B21F7