I will field this before someone with a flamethrower does
Anyone who patches off the EQLive servers after 9/13/05 will not be able to play on EQEmu servers version 0.6.2 or earlier. There is no current plans to make EQEmu compatible with an EQLive client patched after 9/13/05. There are ways to get around this, but posting about how or who to talk to is bannable so just do some searching in the forums and send a PM or two.
Hope this helps.