This 7.5.0 version says that it works with Windows 2000 but when I came to install it on my Windows 2000 PC it popped up a message saying that I have to have XP SP2. Why SP2? I think they need to update.
The encoders were removed, last version to have them seems to be around rev. 3670. Reasons were outdated, buggy and inferior encoders; you should use standalone encoders (x264vfw or x264 for h264 encodings, standalone XviD for xvids..).
More about the issue at doom9: http://forum.doom9.org/showthread.php?t=120465