Did you ever had that very bad experience while you're copying a huge file from a network, only 30sec remaining, the connection failed during a second and you have to start the transfer again ?

Here is a very usefull software, free, sure, that replaces the ugly and inefficient windows default tranfer manager. This paragraph will explain that better than me :

SuperCopier replaces windows explorer file copy and adds many features,Transfer resuming,Copy speed control,Copy speed computation ,Better copy progress display, Copy list editable while copyin , Error log, Copy list saving/loading,...

Here is the link to the english version :
http://sourceforge.net/projects/supercopier/

It's very light and I never had any trouble using it and it's been 3 years since I'm working with!

Try !