It tells you to name the file magicall.mscr - You need MortScript installed on you ppc to recognize the extension. I just installed and tried it out and it works, the only adjustment is that there should not be a space between the 00 873 - just 00873.
For step by step..
Install MortScript (
http://www.sto-helit.de/index.php?mo...=view&entry=65)
open notepad on your PC
Enter
RegWriteString("HKCU","Software\Magicall","SN","00 873") <--- for some reason the site adds the space in 00873
with the appropriate key (5 digit number with leading zeroes)
Save it as magicall.txt
right click your new txt file and rename it magicall.mscr
copy it to you devices My Documents folder
Open file explorer and long press the file and select copy
browse to Wndows\Startup
Longpress and select paste shortcut