If you had formatted your PC using Windows XP CD, you are on NTFS5 already. And if you want to use Tally 4.5, I'll suggest you to download and install DOSBox. It is available here: *www.dosbox.com/download.php?main=1
For installing Windows 98 on virtual machine, you need to download & install Microsoft Virtual Machine 2007 (Available Here) and must have the Windows 98 CD........
the link u gave is alright...bt the versions available of dosbox in thre aren't any in english....
i want one in english...
why you want to run tally 4.5?
Upgrade!!
9 is out
actually bro some of my data is in tally 4.5 format...and i dnt knw how to get it converted to new format..
also thre is lan in my factory....and i hv some very old pcs thre which have only win98 installed...
and those pcs are used for data backup...
so i can't upgrade to new versions that very easily..!!