I m USING XP Professional 2005with sp2. Inbuilt dos version is 5.1. How can I use DOS 6.2? Can I download dos 6.2 and install it? Will it hamper the EXISTING installed softwares in XP? Please help me with PROPER suggessions. Its very urgent THANKS devduttaaDouble PostActually his other Post is about installing DOS....this one is about installing DOD.... Not sure what it is but Topic CLOSED.