Need help with array output to csv.

I am running a server inventory script for all networking info and I have this snippet 

$keyname = 'HKLM\System\CurrentControlSet\Services\TCPIP\Parameters'

foreach($server in (gc c:\input\bulk.txt)){

$w32reg = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey('LocalMachine',$server )

$keypath = 'System\CurrentControlSet\Services\TCPIP\Parameters'

$productKey = $w32reg.OpenSubKey($keypath)

$productVersion = $productKey.GetValue('SearchList')

$server,$productVersion

}

This does fine for screen output but all my attempts to put all the info in an array and output to csv have been failed attempts.  I am trying to get 1 col with servername and the second with reginfo from the query.