Disclousre: I have no experiance in doing taxes or any license. I am a softare engineer who does not trust competence of people based on theirs or others opinion. I like to verify it for myself. My advice here is from my own personal experiance that occured on Jan 16, 2008 in Morrisville, NC when meeting with a CPA in his office.
Ask the person if you could deduct your cell phone expenses (or something like that) if you were exclusively using it for your business and you were not being reimbursed for it by your employer. Then listen carefully to the answer. If he/she tells you unless it is required by your employer, you cannot deduct it, start looking for another accountant. According to form
2106-EZ, "An expense does
not have to be required to be considered
necessary".
Look at the 2007 form here (if the link doesn't work, google 2106-EZ to get the latest one):
http://www.irs.gov/pub/irs-pdf/f2106ez.pdf
Good luck,
Majid