I have a H1B approved petiton ,can i transfer now

I have a H1B approved petiton ,got it in the year 2007 quota , same H1B petition transfered by my india employer in 2008.New transfer petition valid from 11/18/2008 to 06/15/2011. i got stamping in june 2008. I never traveled to US till now.Now a US company want to hire me. Can this company use my old approved H1B to take me there.
Again i can apply for H1B transfer by using latest 2008 petition (it’s approved in Nov 2008) is it possible.

Present i have 2008 new petition (valid from 11/18/2008 to 06/15/2011)

Please let me know.