Urgent

Can anyone help me

We have one database which is at noarchivelog mode.
we had a database crash.
we have full export backup
and os backup which is taken when the database is up.
So when i use the os backup and start the database it gives me the following error

ORA-00214 controlfile 'string' version string inconsistent with file 'string' version string

Cause: An inconsistent set of control files, datafiles, and redo log files was used.

Action: Use a consistent set of control files, datafiles, and redo log files. That is, all the files must be for the same database and from the same time period.

i just need to open the database.
Is there anyway i can open the database and then apply the full export or
i should just use the fullback up. If so how do i proceed.

If anybody helps me i will be thankful