Can rangers use poison on either arrows or bows? if so, : 1. What level can they start doing so, and 2. What type of poison can they use?
Are you asking if rogue poison works on archery? No it doesn't. We get an AA called poison arrows that starts at 86 that applies a poison damage proc to arrows. Does some decent damage but very mana intensive. https://www.raidloot.com/AA.aspx?name=Poison arrows
Yes the spiders bite does apply when you use melee attacks. You will get more use out of Dragonmagic focus potions from bowing. It's a 10k proc that fires off of spell spamming. Unless your good friend is a rogue and you want to help him fulminate. (Sounds dirty)