Can you explain to me what is Hindiuism Religious?

Here are several websites that will help, especially the first one (Wikipedia):
http://www.google.com/search?q=hinduism&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA

=)

One of my favorite boards for religious questions concerning faiths of world religions:

http://www.religioustolerance.org/

Here's their introductory page about Hinduism:

http://www.religioustolerance.org/hinduism.htm

Matt