OK, Here you have one of the most awaited Excel's addin crack:
XLstat 5.1 V2 Evaluation Resetter
Download XLstat 5.1 V2 from this address:
http://www.xlstat.com
Addin Cost: To much money....
Crack instructions:
1.- Install it following author instrucctions.
2.- Install "Reset_XLStat_V5.1_V2.REG" (making sure you're out of Excel before installing the crack).
3.- Start Excel and the Trial period has been reset
Note: It's a real bitch to crack, so I made a trail period resetter.....
Pink Panther