Recently I also faced similar issue where I too was need of a LGA775 socket based board and suggested ( *www.thinkdigit.com/forum/cpu-motherboards/161328-need-advice-new-lga-775-motherboard.html ) to look into these.
Gigabyte GA-G41MT-S2 Motherboard | Motherboard | Flipkart.com -> Rs. 2500, cheapest option
ASUS P5G41T-M LX Motherboard | Motherboard | Flipkart.com -> Rs. 2900, but has PATA port for Legacy DVD RW or HDDs
Gigabyte GA-G41M-Combo Motherboard | Motherboard | Flipkart.com -> Rs. 3200, but has PATA port and DDR2 RAM slots along side of DDR3 also..
Are you upgrading or building a new system ?