Yes u can, u can attach it by importing it first and doing all that stuff, then go to triggers then make a new trigger, make the event: map initialization, then make the action: special effects- create special effects on unit. then it should say Create special effect attached to the overhead of (Triggering unit) using Abilities\Spells\TalkToMe\TalkToMe.mdl. Click on the word overhead then type in back, then click on ok, then click on (triggering unit) and then click on select unit, the trigger screen should be gone and then you'll have to click on the unit u want to add the attachment to, (MAKE SURE U MADE THE UNIT THAT U WANT TO ADD THE WINGS TO ON THE MAP) now it should be back on the trigger screen. Click on ok then click on Abilities\Spells\Other\TalkToMe\TalkToMe.mdl.Now click on the checkcircle and select the attachment u want to add. then click on ok. then exit the trigger editor. Then save the map. And your done. Just start up the map and your set. If it doesnt work then ur doing something wrong...