Income tax on the income of mlm

I had joined a MLM online site few monthes ago. This company add me with his company as  "Participant" of its "Promotional Scheme". 

Now after the financial year ending 31.03.2011, it gives me my commission and TDS certificate.

Please tell me which Income tax rates I am eligible to file my income tax return.

I am confused whether I am in tax slab which is under "Lottery/winning prizes" etc. as the MLM company made me its "Participant" and participants are mainly in Lottery/prize competition etc.

Please clarify. I shall be very thankful to you.

Regards