Hi Rookie,
Thanks a lot for your feedback... Really appreciatia that. I will try your solution. Anyway i solved that problem using below script and it works
use master
exec xp_cmdshell '"c:\Program Files\Microsoft SQL Server\80\COM\SNAPSHOT.EXE" -Distributor DisName -DistributorSecurityMode 0 -DistributorLogin DisLogin -DistributorPassword DisPass -Publisher PubName -PublisherSecurityMode 0 -PublisherLogin PubLogin -PublisherPassword PubPass -PublisherDB PubDB -Publication Pub -ReplicationType 1'
ReplicationType = 1 for transactional replication, 2 for merge replication
Thanks