Yes, all files needed can be found here: alterIWnet • View topic - AlterIWnet version 1.3.37a Downloads
Then the updater: http://alteriw.net/content/aIW-37a-10802.zip# DLCs Repository (961 MB)
# Move_Stimulus.exe (54,5 KB)
# Patch 3 (small)
When you got all that it should work.
I personally installed via steam and just patched it to aIW.