.SaveAsFile - overwrite Read-only file

I have written an outlook addin which takes attachments and saves them somewhere on the local machine. The problem is when the file is a read-only file then it gets saved as a read-only file and when I try to save another file with the same name i want it to overwrite it but it doesnt it gives me an access denied error.
Is there an option in the saveAsfile method to save it as not read-only?
ANY HELP WOULD BE GREATLY APPRECTIATED..
THANKS.

VB Code:

Kill "C:\Woof.exe"

Think that'll work.

Woof

Thanks for your help.
But still not working I am getting
error #75 - Path/Access Error.

VB Code:

SetAttr "c:\woof.exe", vbNormal
Kill "c:\woof.exe"

Woof

That worked, thanks!!!