I'm no expert on this, but I can relate!  The good news is..  I finished this program and I believe you can too.  One trick that helped me was to focus on the positive.  Congratulate yourself for getting out there PERIOD.  It's more than what you're used to doing, right?  I set the goal:  "Get out there for 30 minutes- whatever you get done- GREAT!"   To borrow a phrase from the P90X guy, " Do your best, forget the rest".   You will see improvement and your body will get used to running.  Eventually you'll find yourself getting cranky when you don't get to go!  Good luck and stick with it!

I just did my first day yesterday and I can relate! I was able to finish the 60 second intervals of jogging (some barely...) but I know that feeling! It becomes so hard for me to breathe that I dont feel as though I can finish! I used to be in very good shape, I played field hockey in high school and I remember feeling this same way the first few conditioning practices and it did get better! By the end of the season I never got that burning feeling in my chest and I was hardly ever out of breath! Thats what is going to keep me going- knowing that it does get easier!!!

I loaded Robert Ullreys c25k on my phone HTH

I agree with Saints72903...When I began running, my pace was WAY too fast and I burnt out quick, and my lungs and throat hurt because I was panting like crazy while running.  I focused more on my breathing, and more so through the nose as to not dry out my throat huffing and puffing.  I slowed my pace to where I could have a simple conversation.  This helped my burning lungs tremendously.  I do have asthma, and I don't have issues breathing while running anymore.  Running outside makes a big difference too.  If it's too dry you may get a scratchy throat.  When it's humid, I get all phlegm-y...yuck.  I also have pretty back seasonal allergies too.  But you will find a balance.  Your endurance will come too...on your off days you can do some strength training to start building your muscle endurance as well.  Drink lots of water, and replace your electrolytes...Bananas are good pre/post run eats, along with calcium and protein.  (All in my opinion, and by no means am I an MD, nutritionist, or trainer)