Need to use variable Local Paths

Hello,

I have a the following snippit, how can I add a variable to the bolded UNC path C:\TEMP\GPO\source\5\{231A178D-DC6C-4186-9575-9C64F07DA5B5}\gpreport.xml

Those paths will change a lot in my scenerio. Thank you.

$file_server = Read-Host "Enter the file server IP address"


(Get-Content "C:\TEMP\GPO\source\5\{231A178D-DC6C-4186-9575-9C64F07DA5B5}\gpreport.xml") | ForEach-Object { $_ -replace "99.999.999.999", "$file_server" } | Set-Content "C:\TEMP\GPO\source\5\{231A178D-DC6C-4186-9575-9C64F07DA5B5}\gpreport.xml"

(Get-Content "C:\TEMP\GPO\source\5\{231A178D-DC6C-4186-9575-9C64F07DA5B5}\Backup.xml") | ForEach-Object { $_ -replace "99.999.999.999", "$file_server" } | Set-Content "C:\TEMP\GPO\source\5\{231A178D-DC6C-4186-9575-9C64F07DA5B5}\Backup.xml"

(Get-Content "C:\TEMP\GPO\source\5\{231A178D-DC6C-4186-9575-9C64F07DA5B5}\DomainSysvol\GPO\User\Documents & Settings\fdeploy1.ini") | ForEach-Object { $_ -replace "99.999.999.999", "$file_server" } | Set-Content "C:\TEMP\GPO\source\5\{231A178D-DC6C-4186-9575-9C64F07DA5B5}\DomainSysvol\GPO\User\Documents & Settings\fdeploy1.ini"

(Get-Content "C:\TEMP\GPO\source\5\{231A178D-DC6C-4186-9575-9C64F07DA5B5}\DomainSysvol\GPO\User\Preferences\Drives\drives.xml") | ForEach-Object { $_ -replace "\\99.999.999.999", "\\$file_server" } | Set-Content "C:\TEMP\GPO\source\5\{231A178D-DC6C-4186-9575-9C64F07DA5B5}\DomainSysvol\GPO\User\Preferences\Drives\drives.xml"

(Get-Content "C:\TEMP\GPO\source\5\{231A178D-DC6C-4186-9575-9C64F07DA5B5}\DomainSysvol\GPO\User\Preferences\files\files.xml") | ForEach-Object { $_ -replace "\\99.999.999.999", "\\$file_server" } | Set-Content "C:\TEMP\GPO\source\5\{231A178D-DC6C-4186-9575-9C64F07DA5B5}\DomainSysvol\GPO\User\Preferences\files\files.xml"