How do i put songz from my computer onto my ipod without deleting my other songs from the other computer??

unfortunately you can't. Itune people are smart, they don't want you to be sampling other people song and be able to download others while mainting those free ones... It's hard cuz I changed computers lost half my CD's in a move, but I'll never be able to get those songs back unless I buy the CD or the songs online.... it sucks sorry.