Mikrotik 450G Password forgot help

Hi

I have forgot my Mikrotik 450G router password, any one can help me out with this issue as I have huge configuration on it, I cont reset so please give any solution regarding this issue..

There is no password recovery in RouterOS.
You can only reset the whole configuration.

hi
you can re-install router os with net install program and keep old configuration with reset old password.for do it,follow this link http://wiki.mikrotik.com/wiki/Manual:Netinstall