I thought that I had everything covered, but it seems to not be going to plan.
So I purchased a good Co2 regulator and have a bottle of co2 gas but can't seem to be able to attach the reg to the bottle securely.
I have posted some photo's below of my set up, do I need an adapter for the reg or the bottle, or is it a case of just making sure that it is all really secure, I am not sure if their should be a proper male/female thread thing going on. Basically, I am stuck and not too sure, has anyone else come across this problem?
Picture of the regulator:

Picture of the regulator to co2 thread:

Picture of Co2 bottle from adamsgas:

Second picture of CO2 bottle:

As always, thanks for the guidance and support.
MG