I just wanted to post this thread as a thankyou for all your kind words today. I have had about the most stressful day ever and really did feel at one stage today that I would explode with sadness.
Each and every one of you who posted on my thread earlier today gave me enough energy and lift in spirit to carry on and work through it to try and begin to sort things out.
After spending over 5 hours on the phone I think I may be on the way to putting our application back on track along with the help of an amazingly helpful fella called Roland in the Adelaide processing centre. We between us managed to get immi SA to agree to send the form 1100 and I have recieved email confirmation that this has been sent to diac. Just need confirmation from diac that they will accept a late form before we can move on. Diac assure me tonight that our visa application is valid and is still in priority 2 position but couldn't clarify a timeline other than they hope for it to be assigned a co during this group year (before July 2011).
Anyway I just needed to thank you all or helping me to see through the immediate madness I know you guys are always there for me. You are my immigration rock!!!!