The Government of India has decided to launch the scheme for Overseas Citizenship of India (OCI) with effect from 14 November 2005. The eligibility criteria and the application form are available at: http://mha.nic.in/uniquepage.asp?Id_Pk=553.
You can go to the online application form here: OCI Online Form
Forms duly completed, along with a fee of Euro 260,- per application can be submitted to this embassy for being forwarded to the concerned authorities in India for granting of the OCI Registration Card. Those who are already holding PIO Cards can apply on payment of a fee of Euro 25,-.
The OCI Registration fee is normally required to be deposited in cash at the Embassy counter. In the case of applications being sent by post, the fee can also be deposited in the Embassy of India, Helsinki, Account No. 206618-17423, with Nordea Bank by quoting Reference Number 1070. In such cases, applicants are requested to attach the original Bank Advice along with a copy thereof with the application. Name(s) of applicant(s) and service required must be indicated in the Bank Advice.