hi Tameer,
could you please brief me more on your requirement, do you want to configure 3 vpn's on asa???
the following links will help you
when you are configuring from CLI just take care of one thing to exempt the vpn traffic from natting as that one thing is missing from the doc's
you can do that by doing the following
ex:
nat (inside) 0 access-list crypto_traffic
http://www.cisco.com/en/US/docs/security/asa/asa72/configuration/guide/site2sit.html
http://www.cisco.com/en/US/docs/security/asa/asa72/getting_started/asa5500/quick/guide/sitvpn_b.html
http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a0080702999.shtml#s2