The NF7-S v2 is a different board than the NF7-S2. The latter lacks many OC features. Since I have the former I can't you if the NF7-S2 has a lock. If you can't find out with a google search, OC it a little, then run Sisoft Sandra or Everest Home Edition and see if AGP/PCI remains at 66/33mhz.
Fern