Clear PuTTY host-key

When a server keep rebuild over and over..
and try access from PuTTY time from time with same server IP and different Host..
May face problem such as..

The password keep wrong.. seem cant be authenticate..
If face this problem.. Try this..

1. Try use another SSH software to ssh to the server.
2. a. If cannot, means the server setting not done properly..
b. If CAN, then clear putty RSA and Host-Key

PuTTY host key can be found at
1. Run > regedit
2. GOTO "HKEY_CURRENT_USER\Software\SimonTatham\PuTTY"
3. If not mind reset all the setting.. Just delete the "SimonTatham".