I know there are lots of sites on the Internet for lesson plans and resources but most of them seem to be from people outside India and their topics and syllabus is different. Besides for many subjects where topics are the same (such as Science and Maths), they use materials and resources that are not available to teachers in India
Nintendo Wii Fit
MSN has an Encarta website with lesson plans and message boards for teachers.
There is a new forum that is designed specifically for teachers (and others involved in education in India) called educatorslog.in (http://educatorslog.in). The idea is to provide a space for teachers, parents and others to share ideas and resources that are contextually relevant to teaching in India. It is meant to be a community forum for teachers, parents and educators in India.
The resources that are being shared are websites, books, articles, and organizations, and they are all “tagged” and organized by subject and grade level, so I’m sure you’ll find lots of curriculum ideas for whichever grade and subjects you are planning to teach. You could also pose questions there, and add resources (that you may find), too!
There is also information on education programs for in-service and pre-service professional development in India.
It is a great resource for homeschooling in India as well, as not all resources shared by homeschooling networks and forums in the US and elsewhere are relevant to teaching and homeschooling in India (as you rightly pointed out).
Good luck with your teaching!