Well, You can just click this link: http://www.tamilspider.com/adsense/ChooseType.aspx and choose the button Associate an existing Account and fill up the formalities associated with your existing account and proceed to associate your Google Adsense Account with TSR.
Usually it is expected to be approved with in 24 hours in TSR, if found a valid one.
My best wishes.
Your Co-passenger - Satish.
Water depth is Lotus's height; Mental Strength is men's merit - Thirukkural.