Hi All. I've been trying desperately to break into the I.T. field with no luck

I've been on over 10 interviews. I have my Bachelors in Business with a concentration in Information Technology Management and I completed a 6 month internship, so I have that under my belt as well. I really want to focus on Software Development (SQL, ASP.NET, C++) because that is where my experience is. I would consider myself intermediate though, not proficient in the areas listed above (SQL, ASP.NET, C++). I am willing to work in network, help desk or anything IT related at this point. I currently work in accounting, and have been an accountant for over 7 years now. I'm ready for this change. What certifications would any of you recommend I get to break into the field?.. Thanks for everyone's help in advance!