Do i need a new stamp on for cap exempt h1b petition ?

I have a valid visa stamp on passport till 2015.

However, I got laid off from employer and returned back to the home country. Now there is another employer who would like to file Cap Exempt H1b petition for me ?

Would it be possible to travel on old visa stamp and new H1b petition. or should i go for a new h1b stamping interview ?

Thank You

Usually, you can travel on old visa stamp and new petition. However, some employers prefer that you go for stamping again so that visa stamp bears their name. Check w/ your employer/attorney.