Eligiblity for 44ad for professionals

I am a freelance writer working from home and providing content to websites located abroad. My earnings are in US Dollars and are converted by my bank into INR. I have a couple of questions: 1. Am I eligible to compute my income u/s 44AD, now that it has been expended to include professionals? 2. Am I liable for charging Service Tax if my receipts exceed Rs.10 Lakh Thanks, Mahendra Naik