How to replace " (double quotes) with '

[netpro]

I am trying to read a text file and wish to replace all occurences of double quotes with a single quote.

I have tried :
Replace(textstring , " \" " , " ' ")
Replace(textstring , ' " ' , " ' ")

But get an error.

[Iain17]

'use the characters code
myStr = Replace(myStr, Chr(34), "'")

'or this works.
myStr = Replace(myStr, """", "'")