Multiple computer names on one machine

Use a DNS CNAME record instead of WINS.  This will automatically redirect clients to the appropriate name.

Phil.

Thanks , tried that too but still cant access it with a UNC path - Can ping it fine but as soon as I try and map a drive usin \\aliasname it gets unhappy. - Either getting no network provider has accepted the given network path....Or it gets to the authentication prompt and as soon as I enter the credentials it tells me a duplicate name exist on the network

Any further ideas?

Have you thought about just using the IP address vs a host name?  You could even add multiple IPs to the same PC.

I managed it ,

Although I could ping the machine I assigned the IP address to I could map a drive......(errors above)

The following Registry entry will force the server you are trying to connect to to "listen" for that alias.

HKEY_Local_Machine\System\CurrentControlSet\Services\LanmanServer\Parameters - > Create a string called Optional name and give it the "alias" name

This together with the CNAME record works like a dream.