Urgently need help with joomla E-Commerce

Hello people,

I am developing a site in joomla where users can upload the pictures in their portfolio and other users can buy the pictures......

I need the help urgently about which extensions should i use..???

for the portfolio gallery i am planning to use EPortfolio where users can manage their portfolio, but i am not finding it suitable for my requirements...

Please guide me urgently, which components or extensions should i use to make it happen...??
If possible, then there will also be the payment categories like, user can set some images as free, sponsored, or featured....

I need an urgent help With this...

Please help me out.....


waiting for replies..

Thank you in ADVANCE....


Regards
Alhad.

Pointing out the obvious... http://forum.joomla.org/