WoWPS (v5) is a custom client which removes the "?" icon from custom items and allows you to enchant them.
Screenshot:
prntscr.com/7gqpgf
Download Link:
mediafire.com/download/b8ns7p90ncsmxl3/WowPS(v5).exe
How To:
1.Download it.
2.Put it in your WoW directory
3.Open it
4.Have fun