Scripting

You need to first create a custom inventory rule. I would recommend reading the relevant section in the administrators guide (In your K1000, click Help, Administrator Guide, Writing Custom Inventory Rules).

You would want to use FileInfoReturn to get the modified date, but that doesn't support getting the file size. I'm not sure you you would get that. Does the dll file include versions? If so that might be a better way to compare between machines.

You can use this script in Powershell. This will get the file set on the first line. This will then output a txt file to c:\temp\test.txt with the file size and date modified. By default the file size will be in bytes. You can change to KB or MB depending on what you need by adding /1KB or /1MB to the end of $file.length on the 3rd line. 

$file = Get-Item "c:\program files\temp\test.dll" #Change file name here as needed.

$outfile= "C:\TEMP\TEST.TXT"

$file.Length|Out-File "$outfile"

$file.LastWriteTime|Out-File "$outfile" -append

If you are using Kace you can then write a custom inventory rule to read that .txt file.

ShellCommandTextReturn(cmd.exe /c type C:\TEMP\TEST.TXT)