product with Arduino and a kind of VirtualWire library

[pallavi]

product with Arduino and a kind of VirtualWire library, but must be multi-communicate as multiple instantiation (many transmitters and many receivers on the same Arduono board).
pls let me know what are the technologies and requirement needed for this

[Robin2]

What do you want to use this 'product' for?

Are you hoping to find a ready-made solution or are you planning to construct it yourself?

I have built a system for radio-control of model trains but I don't use the virtual wire library.

...R

[mauried]

Yes, the OPs question makes no sense at all.
What are you trying to do?

[raschemmel]

many transmitters and many receivers on the same Arduono board). 

not to mention that the word "many" is vague to say the least.