Deploy custome site template in to central admin

Hi,

I have site template solution "abcd.wsp". I addd this solution and deployed into the my sharepoint server.

using this below steps,

stsadm -o addsolution -filename "abcd.wsp"


stsadm -o deploysolution -name abcd.wsp -allowgacdeployment

but i can't able to see this template name in my "Custom template" tab in central admin while create a site.

please give me a solution