MN700 -- cannot file/print share

I cannot figure this one out. I have the MN700 setup and
working fine. I can access the internet through my laptop
connected wirelessly. However, I cannot see any of the
shares on my PC. I have a hard drive and a printer
shared. When I try to navigate to the shares on the
laptop, I get "...is not accessible. You might not have
permission to use this network resource...The network
path was not found." I also cannot ping the PC from the
laptop. This was all working when I had a netgear router.
Both the PC and the laptop are in the same workgroup.

Any help will be much appreciated before I take this
thing back!!

Thanks,
Michael