OK to remove unzipped dell-drivers-folders after installation?

Hi!

I´ve got a XPS M1530 with Vista. After a reinstall of Vista I installed the drivers from the dell-drivers-CD which came with the PC. When installing the drivers they are unpacked and stored on the hard drive before executing the setup program.

My question is:

Is it ok to remove the unpacked files now, after the installation is complete? They cover a disc space of over 300 MB (which I think might be unnecessary).

/Thankfull for answer/idea!