[c-nsp] SmartNET on Used Router?

[Adam Piasecki]

How would i go about buying SmartNET on a used 7507 router. Not sure how
long the router has been out of SmartNET or ever was. Here is a Show ver

Cisco Internetwork Operating System Software
IOS (tm) RSP Software (RSP-PV-M), Version 12.2(15)T9,  RELEASE SOFTWARE
(fc2)
TAC Support: http://www.cisco.com/tac
Copyright (c) 1986-2003 by cisco Systems, Inc.
Compiled Fri 31-Oct-03 23:36 by ccai
Image text-base: 0x4001095C, data-base: 0x41B5C000

ROM: System Bootstrap, Version 11.1(8)CA1, EARLY DEPLOYMENT RELEASE SOFTWARE
(fc
1)
BOOTLDR: GS Software (RSP-PV-M), Experimental Version 11.1(10047) [rrohit
122]

Thanks