I’m hoping to have Windows 7 here installed here in a few weeks, but there are some resources out there. One I would recommend for Chinese is Pinyin Joe. He’s been around for a long time, but his Windows 7 page is quite up to date with information about fonts (including those with the Hong Kong characters (HKCS)), input options, Bopomof and non-hanzi scripts such as Yi, and Tibetan.
As a bonus, the site also maintains information for Windows Vista and XP as well as Ubunto Linux. Very helpful.
FYI – If you’re a Mac person, you may want to check Yale’s Chinese Mac. They’re not quite up to 10.6 yet, but information from previous versions should get you caught up in no time.