Pls. guide me how to get refund of my TDS?

Total salary paid by employer in FY 2007-2008 is 2,50,000
TDS deduction is 8,000

I have following document for 80C rebate
i) LIC(Annual)——————– Rs. 11,000
ii) PPF—————————— Rs. 9,000
iii) Tuition fee for my daughter study in KG is around Rs. 4,000
iv) Donation ————————- Rs. 3,000
Pls. give me in detail how much house rent I can show to get refund of TDS.

Pls. give me detail analysise to get it return back.