I want to transfer some games that i have downloaded from itunes to iphone. Please help? any tips i think the phone is 2G 1.3 or something like that

I use Limewire, and I download songs illegally. I was wondering if I could transfer my illegally downloaded songs to my iPhone 3G. If so, do I have to buy an accessory to do this? Or can I just plug it up to my computer and transfer the songs to my iPhone 3G?

I really want to know how I can get my gf’s PAID apps over to my computer or iphone? while keeping mine as well. Thanks so much

iPhone