Connecting Wireless to PC to a PS2Follow

I'm pretty sure what i'm trying to do is possible, but its not working out for me so far. I get my internet from a friends apartment over their wireless router, now I'm trying to connect from my laptop to my PS2 via Ethernet cable, or connect on my LAN router to my buddy's older PC, and the PS2. I'm not sure if I"m doing it 100% right, using setup home or small office network. Can someone give me good details.