I had a very slow draining vanity sink and after drain cleaner and plunging didn't fix it I decided to check the p-trap. The pipes are chrome and when I tried to remove the p-trap nuts they basically shattered. All I've got now is the long chrome pipe connected to the waste pipe in the wall. I'm not sure how it's connected (i.e. soldered) and can't really see any kind of nut back there holding it on.

I'm wondering what my options are now. I'd like to replace everything with a plastic p-trap but I don't know how to remove the chrome pipe or even if I need to. Can I cut it off and use some kind of adapter fitting to connect the remaining chrome to the plastic p-trap? Do I have to remove the chrome piece entirely? Should I give up and call a plumber?

I tried to upload a pic but it won't accept any image formats.