DO I have to take CHem 1 & 2 again if I took it 5 years ago ?\
Well, some school will say they want the pre-reqs, like chem, taken within 5 years of application. Even if they don't, you might want to take them again anyway to refresh for the MCAT.
When it comes down to it, it is a matter of how much money you have for classes and how much time you are willing to spend prepping to just get into school.
I graduated in 2001 with a degrees in chemistry. I started my prereqs (bio 1&2, Anatomy/physiology1&2/ genetics, psych, microbiology) at community college in the fall of 2007 (because it was super CHEAP). I then retook organic chem because I took it ten years ago. I did it at 8 week summer course at a local university -- kinda intense; we covered a chapter a day, but it was review for me. I'm now taking undergrad and grad level bio (human phys, cell metabolism, toxiocology, etc) at the local university and will walk away with a post-BACC certificate.
I'm applying to MD and DO schools right now even though I haven't technically finished the post-BACC, but I feel I'm qualified (I took the MCAT in August). I may retake the MCAT because I honestly didn't study much and I know that I could do better.
Anyway, there are many routes you can take. I'd say you should talk to some doctors, PAs, and pharmacists to first determine what path you find the most appealing and try to concentrate your efforts.