I have a droid X. I tried the listed method but it didn't work. I used bootstrap and clockwork recovery. They seemed to install ok and were in the choices but when I selected one of them they would force close. I tried removing them following the method of using adb but I kept getting adb: not found. I then went to titanium backup and uninstalled them from there. I then unziped the package and using Root explorer I copied the library file over to system/lib and then copied each apk over to data\app. After reboot they didn't show up in the list so I reopened root explorer and navigated to data\app and found each wallpaper and manual installed it using the package installer in root explorer. They work fine now. A couple of them don't quite fit the screen as there is a small section at the bottom that is just black. A couple slow the system down more than others. Overall, pretty cool. I think I'll only keep 1 or 2 of them though.
So, using root explorer, copy the library file over to system\lib then copy each apk over to data\app and manually install each apk from there. Worked for me.