To break in you will need to most likely work for a contract sales organization like eVentiv. I have been in the industry 16 years and I agree with the previous posters - things are in a down sizing mode. This is not a time to get started in pharma.
Terrible advice.
Contract companies are the companies that WANT experience these days. pre 2000, you were correct. even pre 2010. But, now, if you don't have a solid 3-5 years of pharmaceuticals, you are not considered.
OP, you have to get with a bigger company, because these companies like to abuse their employees with long hours and low pay.
My advice to you is to find something you are passionate about. If that happens to be pharmaceutical sales, then network with all your alumni and ask them if you can take them out to lunch to discuss this business. If you can do it, do a field ride with them.
its not an easy business, when done correctly. however, we have about 80-90 percent of sales people that don't do this job correctly, so pick a good mentor and go from there.
also, you will meet the biggest turds on this planet in this industry, so I would not recommend it. If you can find a company where the management is mostly men, then you will be in a good situation.
the women have ruined our industry for too many reasons to list. but, the biggest reason is because they are lazy and they gossip a lot.
good luck!