XP Scheduled Tasks and Acronis backup defrag

I'm new to Defraggler (free version) and have two questions:

1) In XP's scheduled tasks, what is the syntax for starting a defrag of the C: drive. Right now, I have "C:\PROGRA~1\Defraggler\Defraggler.exe C:\", but that just opens the program. I also tried using df.exe, but it just ran a script and closed.

2) Does Defraggler have problems working with Acronis back up files? I ask because a first run on the drive where those backups are stored (9% fragmentation, 8GB) took a few hours. I'd seen it before with another defragger.

Remove the backslash when defining the drive.

*df.exe C:

That's a good question on Acronis, I too am curious if anyone has experience on that. Although that may be something to check with Acronis.

Thanks, that syntax worked.