query about vim replacement

Hi,
I want to replace syntax in files like below in gvim. The file has 90000 lines. manually replacing is very tough.

1) -from { replaced with -from {abc.abc_core.
2) -from [a-z]+ replaced with -from abc.abc_core.[a-z]+
3) -from [A-Z]+ replaced with -from abc.abc_core.[A-Z}+
4) -from * replaced with -from abc.abc_core.*

can you please help me in this regard.
Thanks,
Kumar

--
--
You received this message from the "vim_use" maillist.
Do not top-post! Type your reply below the text you are replying to.
For more information, visit http://www.vim.org/maillist.php

---
You received this message because you are subscribed to the Google Groups "vim_use" group.
To unsubscribe from this group and stop receiving emails from it, send an email to vim_use+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.