[hellegpt]

I have a laundry room that was added on to the garage. The water lines are connected to the plumbing going to the kitchen sink. I have a sink in the laundry room used as the vent. This has given us real bad odors in kichen and laundry sinks. I want to take out the sink in laundry and repipe the vent through the roof. I want to take the pipes going to the kitchen plumbling and go outside, using the laundry room outside wall. I will have to drill a hole out for pipes.
How can I do this myself and do I need to tie into the outside sewer line. I know I will need a professinal for this due to going into the city sewer lines.
I need to know the best way to handle this and the cheapest way to do this myself.
Any suggestions would be helpful.
Helle