All the advice given here is good, so I can't really offer much except that I hope the fluids help Panther!
I know it's scary to stick a needle in your baby, but I'm sure it will help. When people ask me how to give SubQ fluids, I say pretty much what everyone else has said here, but I prefer to have the cat on a nice solid surface, like a counter. Place a soft towel beneath kitty to lay on and make sure he is comfortable. Gently pull the skin between the shoulder blades up to form a "tent". You will notice the tent will kind of sink in below where your fingers are and the shoulder blades. This is the best place to insert the needle. You want to be sure not to go too deep, and you will be able to tell if you do if there is any blood, or it's hard for you to get the needle through.

I hope this helps, and hug Panther for me.

**hugs**