I'm trying to create an enchantment for a custom sword that inflicts 20 points of fire damage each strike, regardless of my character's level.

Is there any way to do this without having to create multiple versions of the enchantment and the sword to account for the leveled damage system, or tamper with the global settings?

Anyone?

Only way I can think of is to script it with DamageAV("Health", 20). Otherwise, like you said, the damage will be affected by the skill levels of the player and the target.