thank you all. as for the choice, i'm indian, and like sutil, so perhaps that will explain.
and kosio, saw your built as well...indeed a great effort.
1. for suspension, i used copier sheets only...rolled the paper in the form of cylinder and then pressed it, nothing special
2. i used thin cardboard sheets for monocoque, floor, engine, gearbox, nose-cone, rear-wing end-plate (like that of toothpaste carton),and joined few layers together accordingly. for example, 3 for monocoque, 2 for floor, single for the rest. all the bodywork was made out of copier sheets
3. curved shapes can be achieved by pasting two (or more) layers of sheet together and giving the required shape by folding while the glue is still wet. when dried, the shape will be retained. a few more pics
http://img832.imageshack.us/img832/6817/image0167y.jpg
http://img825.imageshack.us/img825/4430/image0157w.jpg
http://img24.imageshack.us/img24/8330/image0160w.jpg
http://img842.imageshack.us/img842/7376/image0162u.jpg
http://img252.imageshack.us/img252/420/dsc03331q.jpg
http://img824.imageshack.us/img824/8187/dsc03330i.jpg
http://img152.imageshack.us/img152/5929/dsc03291ur.jpg
http://img843.imageshack.us/img843/1749/dsc02658s.jpg
http://img138.imageshack.us/img138/6716/dsc02613vz.jpg
http://img255.imageshack.us/img255/760/dsc02444h.jpg