Regex Expression to loop through a column and replace names

Need Excel Regex vba function only please:


Passing a Variable for Column and start cell
example "C2"

SO LET'S SAY :
I have a variable that I'am going to pass  say  
t =  "C2"


01_I then need to loop through each cell in the column C  starting at row 2
02_ Look at 2 different regex expressions.
03_If it finds a similiar match then do a replace.

The values I'am looking for are wildcard searches.

Looking for :

*sunbeam*
and
*Rexal*

Not Case Sentitive

Example:
If the cell contains  "Sunbeam Inc" .....Replace with just "Sunbeam"
If the cell contains  "My Sunbeam" .....Replace with just "Sunbeam"

Example:
If the cell contains  "Rexal Drugs Inc" .....Replace with just "Rexal"
If the cell contains  "Rexal Drugs"       .....Replace with just "Rexal"
If the cell contains  "My Rexal Drugs" .....Replace with just "Rexal"



If this helps to determine where in the column a cells lasy entry may be...Column A will alwasy contains a value...

Thanks
very much
Fordraiders