You are OK without a visa.
Since you are a Canadian PR AND also a citizen of India (which is a Commonwealth country), you do NOT require a US Visitor\'s visa for a casual visit upto 90 days. Just carry your Indian passport and Canadian Landing papers (very important!). Also, at the Port of Entry / Pre-Flight Immigration Office, your passport will NOT be stamped. You are OK for up to 90 days.
This holds true even after September 11.