i was wondering if anomen can use that cromsyr sword thats olnysaid to be able to be used by paladins?

I don't think so- Anomen is a cleric/fighter and maybe eventually a knight but that doesn't make him a paladin

Anomen can't use the Holy Avenger, only Keldorn can (or your PC if you are a Paladin). High level Rogues can also use it after getting the use any item ability.

Remember that dual classed fighters/clerics do regain their fighting abilities, but only in the weapons that are useable by clerics...i.e. blunt weapons. This is why Anomen cannot place proficiecies into any slashing/piercing weapons.