I am a permanent resident of USA with Indian passport wanting to
travel to australia for 2 weeks holiday. Do i need a visa?

Hi abhi2005,

All visitors to Australia except for New Zealand passport holders need
to obtain a visa to enter Australia.


*General visa requirements

Anyone who is not an Australian citizen needs a valid visa to enter and spend 
time in Australia.

*Before travelling to Australia

"With the exception of New Zealand citizens travelling on New Zealand 

passports, all foreign nationals must obtain a visa before travelling
to Australia. (New Zealand citizens are issued with a visa on arrival
in Australia.)

Visas are available from Australian visa offices such as Australian Embassies, 
High Commissions and Consulates. They are also available from travel agents 
and airlines in certain countries."

Australia Travel Search
http://www.australiatravelsearch.com.au/trc/visa.html


Short Term Travel Visa to Australia  

"If you wish to travel to Australia for a short stay, you will need to
obtain a valid visa which permits you to travel and remain in
Australia for a prescribed period of time. A visa may take the form a
stamp or label in a passport, or - for some travellers - can be an
electronic record authorising travel to Australia."

Migration Expert 
https://secure.migrationexpert.com/short_term_travel_visa_australia.asp


-Apply Online for an Australian Short Travel Visa-

Migration Expert 
https://secure.migrationexpert.com/register.asp?type=15


Some interesting sites for you:

Australian High Commission 
http://www.india.embassy.gov.au/immigration/visiting_australia.htm
 
Department of Immigration and Multicultural and Indigenous Affairs 
http://www.immi.gov.au/allforms/


I hope this is helpful. If you have any questions regarding my answer
please don't hesitate to ask before rating.

Best regards,
Rainbow

yes, i'm sure you still need a visa,
for more information, have a loook at:
http://www.immi.gov.au/allforms/visiting_info.htm