Just noticed over on the Mozilla FTP that one of todays latest uploads was an automated installer version of Firebird for Windows. Most interesting is that it claims to be Version 0.8 & is identified as Version 0.8 as well by the likes of Shockwave Flash installer.
Update: This was actually a nightly build, while it may be safe to download and run this version of Mozilla, note it's still not a version meant for wide public distribution. Download link.