Need a macro for batch find and replace in word using excel

Hi,

Please help in creating a macro for bulk find and replacement of words in word using excel sheet entries.

i mean like entering values in excel
Excel - columns
A1(fIND) B1(REPLACE)
ugly lazy
Cat dog

in every instances of msword having content

"The ugly cat was given milk" -- before applying macro

"The lazy dog was given milk" -- after applying macro

This is just an example of two word replacement, but need a macro for multiple word replacement.

Can u please help me out.

Thanks in advance.