If your old HDD is still O.K. maybe you can "slave" it in the new machine, get a friend to download Seagate HDD"tools" off the Web, then with the two floppy disc you will make, copy the old, complete patition to your new machine.
You will probably have to reload all the "drivers" to suit the new "beast" but it may save a lot of time and money, + it leaves the Old HDD as a ready backup.
The following "posting" by "Grandpa" is more informative.