[dheeraj1248]

when i add my site in webmaster tools will it make a difference in placing .com instead of .in?

[NathanielB]

Not sure what you mean by your question?

You need to add your domain in WMT, if you don't own a domain you will NOT be able to verify it and so adding it will give you no stats.

If you own the .com and that's the site your using add that, but if you only own the .in and not the .com clearly you can only add the .in version of your domain because that's the one you own.

[Darrin Ward]

I think the OP has a site ranking in google.co.in but not in google.com

If you have a "generic" TLD google will allow you to set a target region in the settings of Webmaster Tools. Not sure it will make a big difference though because several other factors are part of the equation.

[SEOhostingcouk]

Here is some info directly from WMT that explains how and why you should use geotargeting,Geotargeting - Webmaster Tools Help

[OS-SEO]

If your domain based on .in then you need to set Geographic location as India.