Create XML file using Visual Basic Exress

I am new to VB and I'm working on my first project.

We have developed an in house monitoring tool that requires xml documents for configuration.  These documents are similar to below:

<?xml version="1.0"?>
<systems>
   <system name="CoreSwitch">
   <attribs>
     <attrib="ifLinkUpDownTrapEnable." value_type="3">
        <desc>Link Up/Down - FA0/</desc>
        <snmpcom>fspublic</snmpcom>
        <oid>1.3.6.1.2.1.31.1.1.1.14.</oid>
     </attrib>
    </attribs>
   </system>
</systems>

As you can see this if for an SNMP value to be pulled from a switch.  What I really need assistance with is modifing these files.  Sometimes they are upwards of 50,000 lines and only one value in each section needs to be changed or we bring in a new system and the information is slightly differnet.

I would like to create a VB form that would have the following fields in it:

File Name
Path
System Name
Attribute
Description
Community
OID

Ideally I would run a small VB exe, fill in the necessary information then click create and it would generate a new xml document with the proper information.  I have been doing this with a vbs, however that is becoming cumbersome with of the input boxes popping up.  So I decided I would take a shot a writing a little app to do this for me.  In additon this would greatly help to reduce my time in other areas once i get the hang of writing small apps that perform specific functions.

If you need additional information or have questions, I am willing to help with whatever is necessary.

Matt