I have developed my very own Wordpress theme and that i desired to give customers a chance to sign up for my blog.

I've the normal Publish RSS and Comment RSS options that include Wordpress underneath the META portion of the sidebar, however i also desired to give my visitors a choice to simply input their current email address and press a control button to "subscribe".

I understand you could do since I have seen several blogs which use this, and when needed I'm able to list some here. But I am unsure if this sounds like a wordpress plugin or perhaps a widget or what-have-you.

Knowing how you can implement this functionality right into a Wordpress theme please tell me.

Thanks, Amit

You will find enough newsletter plugins within the wordpress plugin directory. You should not add such code to your theme this is actually a wordpress plugin job, as well as your customers may choose a different one than yours.