Virtual folder

Hi /TECH/

Is it possible to do the following :(i'm using XP)

Making a virtual folder : half of it will be in the HDD, the other in a flash disk.
Why?:
my HDD died, so i replaced it by an old 18giga ide shit hdd, i have only 5 giga left, i'd like to use my usb disk as an extension for the hdd, why? to play the 8 giga Sc2.

Create a folder somewhere
In an Explorer window of the folder which that folder is inside, hold Shift, right-click, and click Open command window here
Assuming your flash drive is E: and you created a folder named Sc2, enter this command: mklink /J E:\Sc2 Sc2

This way, when a program loads data from the E:\Sc2\something file, the data will actually be loaded from the flash drive if it's stored there or the HDD if it's stored there, and same thing when it loads data from the something file in the Sc2 folder on the HDD, and when it creates a file in the Sc2 folder on the HDD, the file's data is stored on the HDD, and when it creates a file in the E:\Sc2 folder, the file's data is stored on the flash drive.

Hello good sir,

when i pushed Entr, i had this message :

'mklink' is not recognized as an internal or external command, operable program or batch file.

Any solution?

http://download.sysinternals.com/files/Junction.zip