Advance Tax and Non deduction TDS from Salary

I have received a mail from my client which I have given below
 
“
I am an employee working in a Govt. Department. I am receiving my salaries through Govt. Treasury. But the Treasury Officer has not deducted TDS from my salary. Now my tax liability become more than my salary of last month (March 2010) .The Treasury officer advised me to remit a sum of Rs.10,000/- as income tax and he agrees to deduct balance tax from my last month (March) salary.

 My doubt is that under what head I have to deposit the tax amount? Advance Tax (100)  or Self Assessment Tax (300)?  If I pay the amount as Advance Tax (100), will it attract interest as per sec. 234B and 234C?

“

Dear friends kindly guide me to give an answer to his query?