I have yet to install "Hijack" as I only just got my PC working again (I far prefer my reliable Mac). I realize that initially I will need to do this by serial cable.

After doing this if I want to use JEmplode to update the player over ethernet, update the hijack kernel periodically or just use Emplode from my PC over my home network through my router, will the fact that my ISP is PPPoE based and offers dynamic IP addresses (which change regualarly) affect me?

I am not very knowledgeable about computers but I understand that the dynamic addresses can cause problems if you are expecting to use a fixed IP address. Or is the address assigned through DCHP (which doesn't change) the one I use? i.e. 192.168.1.1 etc