Write Node Value in XML file

Hi All
SSRS 2008R2

I compare 2 xml files obtained from SSRS reports by making URL.

Before comparing I need to change in XMF files infor in one node :
<Report xsi:schemaLocation="Rep1 http://e1521:8080/ReportServer?%2FPL_Summary&amp;rs%3ACommand=Render&amp;rs%3AFormat=XML&amp;rc%3ASchema=True"
Name="Average_Overhead"
 
with placeholder
( for XML files to be same if server adres is different ).
It is clear that Script Task is needed.

1?) In VFP I programmed there are functions FiletoStr , then AT , ,StrtoFile
What analogs in VB ?
Read file , replace , write back

 2?) May be possible to do it using XML parser cahnge
Would it be easier ?