joomla 1.5 virtuemart a few modification

I need to do following things: (joomla 1.5 virtuemart) 1. tabel ordering (like excel) description, qty, price, on the bootom just sum wich is dynamic when you put in the qty in diffrent boxes it calculates the sum by it self. 2. change username with e-mail (so the username will be always e-mail address) 3. by the watch straps (check [login to view URL]) I need on the bootom of the product a box in wich costumers could put in qty. Because the strap is one model(once picture) and we have diffrent sizes. So there would be one picture with diffrent sizes 12mm and box for qty, 14mm and box for qty, 16mm and box for qty for that model and on the end you just click purchase and the hole qty from all boxes will be added to troley. 4. to make friendy url 5. I need also to make a multiple pruduct upload at once. (picture, description, B2c price, B2b price) so that I also could change prices at once. The best option is true excel. So that i donwnload evrything change description, prices per levels, end costumer, gold suplier, export costumers,...) more details about number 1: order qty-pcs price total Duracell DA13 100 0,40 40,00 Duracell DA 312 50 0,30 15,00 subtotal 55,00 subtotal with tax 20% 66,00 please check our website: [login to view URL] but notice when you come to these site its first B2C site only the registred costumers are seeing the wholesales prices. So there is behind B2C store. Please contact me and send me your offers. Thank you. Waiting for your kind reply. Regards++ Gregor