VAT vs CST

Hi, I am running a small Pharmacuetical Firm which has a turnover of less than 2 Lakhs.

As per instructions from my CA, I have not applied for VAT. He says that as the turn over is minimal..i will not require it.

I have recently got on order from outside Maharashtra.

Now the Party says that i need to have CST inorder to send the goods outside the state.

My CA tells me CST comes along with VAT when you apply for it.

I am confused as to whether i require CST or VAT or Both.

Please advise