Cisco Firewall :: Configure Dmz On ASA5505

I have a asa 5505 Sec plus with 3vlan, inside, outside and dmz.
 
On the outside i have 5 ip's for my use, and in the dmz i have a webserver that need to communicate with one sql server on the inside.
 
The "sql" also needs to be accessible from outside and thus has a static nat with a dynamic nat so it replies from same ip as on nat ie 72.72.72.5 webserver is natted with 72.72.72.6
 
sql inside ip is 192.168.1.2, gw 192.168.1.1
webserver ip is 192.168.2.100 gw 192.168.2.1 
sec lvl on inside is 100 and on dmz 50
 
with a dynamic policy  running inside-net/24 to dmz-network/24 translagt to dmz 192.168.2.2 i can get it to ping 1 way from inside to dmz, but not the other way around...
 
All i need is to open 1 port  ie 6677 both ways for this communication to work.
 
I'm not very familiar with the CLI and do most stuf in GUI  (know i should learn CLI, but time doesnt let me)...

on access rules i have just added everything from any to any using , ip, icmp, tcp and udp just to be sure...  :-)