Here's a version of ABM with (somewhat untested) L4D1 support. Other than that, not much else except for displaying the health on incapped players on the ABM menu and moving it to Left 4 Dhooks instead of Left 4 Downtown.
The gamedata included here works with the latest L4D2, unlike the main post.
The .sp file does not compile with "Get Plugin", could you upload the .smx file?