SSH Logins to Cisco Switch. RADIUS/Active Directory

Hi, I am trying to authenticate SSH logins to my Cisco 3750 switches using RADIUS/Active Directory. I think this means I will need the Cisco switches to send an MSCHAPv2 challenge to the RADIUS server? I am struggling to achieve this and wondered if anyone else had come across this and could offer some advice? Essentially, all I want is to remotely access the switches on my network using Active Directory credentials. Are there any other/better methods if the above is not possible? Any help is greatly appreciated :-)