File type NetBackup_7.5_Win_zip.1of2 and NetBackup_7.5_Win_zip.2of2

Hi Team,

I have down loaded trial version from this site http://www.symantec.com/offer?a_id=91443 which is there in our foum ,

forum:- http://www.symantec.com/connect/forums/netbackup-7...

Can somebody help me how to unzip those files as the type of File is 2OF2 .

Thanks and Regards

Amit Pendse