Nero 8's nerovision wont do this?
I'd figure just add the avi's and choose not to chapter automatically and you can have a menu where you can select each video seperately or choose to play them in succession one after the other.
Unless each video is the exact same length , im not sure i know of an app that can automatically assign chapters for you.
I know Ulead's DVD Movie Factory software lets you insert chapters where you want, but that would take some time with 150 video files.
And i havent used the latest version, so i cannot vouch 100% that the "insert chapters manually" is still intact with the latest version.