Cisco 861W show conn?

If you are running the IOS Firewall (ip inspect), you can use the "show ip inspect sessions" command to view the connections traversing the router with roughly the same informaiton.  A router by default doesn't keep track of connections like a PIX does.  Using IOS Firewall or enabling Netflow would be a couple ways to get this same information.

I tried the command but it shows nothing. So I read on Cisco's web site and found the  ip inspect audit-trail command and turned it on. when I try the show ip inspect statistics I get a little info:
pixy#show ip inspect statistics
Interfaces configured for inspection 4294967294
Session creations since subsystem startup or last reset 0
Current session counts (estab/half-open/terminating) [0:0:0]
Maxever session counts (estab/half-open/terminating) [0:0:0]
Last session created never
Last statistic reset never
Last session creation rate 0
Maxever session creation rate 0
Last half-open session total 0
TCP reassembly statistics
  received 0 packets out-of-order; dropped 0
  peak memory usage 0 KB; current usage: 0 KB
  peak queue length 0
show ip inspect sessions  dose not work. Is there another command I need to turn on to show sessions?  Thanks for your help .

Thank you