Help please - Setting up Wireless router.(extreme maaan)

[The Green Bastard]

Hey guys. I got a new ISP and they didn't give me a wireless router and I need internets in my room. I have an old Speed Stream ISP DSL router from a different ISP. I was wondering if there was some way I could use the other ISP's router for my new ISP's modem? Inb4poorfag I am just too cheap to buy a new router. Thanks.


EDIT: My old router is a phone line and my new one is a cable modem. Just incase you needed to know that. xD