will get one shared object in two separate SWF ?

I am not sure whether I got your question correctly. Can you please elaborate a little more as to what you are trying to do and what issue are you running into.

As such if you are creating a remote shared object on Flash Media server, you can connect to it by using the same shared object name and connecting to same instance on server.

Just ensure that when you use

SharedObject.getRemote("so_name",<remotepath>, <persistense>)  all the three params are same in both the swfs.

Please clarify your scenario more so that it can help me solve your issue better.

Thanks,

Abhishek