After installed S7 v5.5 you should give crack for working in S7 you can get crack from web site.

Now open Simatic Manager from desktop or Click Start>>All program>>SIMATIC>>Simatic Manager
after open Simatic Manager Click on File then New project Wizard Its appear like that

Then click on "Next" Which appear like that

Now select your CPU type I choose here CPU319  3PN-DP then click next

Click on checkbox for all block,language type LAD
after that Click on Check box of create with source files
Then click next !--RELATED-POSTS-STARTS-->