Please give it a go and let me know how you get on. I am interested myself to see if the static command does work when directly mapping the external interface to the 10.0.0.10 address. I am unsure if it will work because you are affectivley setting up a NAT translation on the only external IP Address that you have. You may need to go down the route of setting up the STATIC command specifying the ports that you want to translate. If the above doesn't work try removing the static command above and replacing it with these two
Please let me know if the first static works as it will save me testing it out. The reason is that i have quite a few external IP Addresses available to my pix so we setup static commands to the different servers in the DMZ and then a PAT (Global) for anything else.