digital uploads

[luckyone265]

Hi Im new to joomla and I'm helping a friend develope a website. Her site will
consist of allowing people to upload designs to be printed onto custom fabric per meter/yard etc.
Ideally Id like a shoping cart that allows people to login / register thru the site ( and as such be registered in the shoping cart to) upload designs which will then be placed into the shoping cart as 'individual' items for sale. 
The shoping cart only needs things like material ( i.e gaberdine) lenght and price per meter/yard, attached to each design/item. Is this possible with yor system??  does it cater for 'digital uploads as such ??  if not could you suggest a way of doing this ??
thanks
lucky