Gramps. I highly recommend taking out the time to do bootcamp in ArmA2. This will give you teh basics on controls. Also, FYI, the hatchet is a tool first, in order to equip it, you have to go to inventory and rmb it, then select "remove from toolbelt. This will put it into your primary weapon spot.
If you want a good server and some help, try the Hunters Den. it's password protected, so google the forum site and sign up. Skeeter will give you password access. From there, I can help you out. When you start a private hive that offers weapons, you should immediately go to inventory and unequip and then re-equip the items so you can use them. Sorry for the late response and let me know if I can be more helpful.
Cheers.