Asset Depreciation for future periods within same fiscal year

Hi SAP Guru,

I need to Run the Depreciation for future periods within fiscal year -2012 till six months then i need to retire the asset.

say for Example, in Feb-2012 itself , i need to run the depreciation for March,April, may,...2012.(till six months) then i need to retire the asset.

what will be the configuration steps for this case...please

Thank you

viru