Purchase an operating system, an office suite, and an antivirus package. But if you need more, look for vendors' software bundles to upgrade your software. For as little as Rs.400, you can often upgrade from Microsoft Works Suite or a similar package to a full office suite like Microsoft Office XP Small Business Edition--a great value considering Office XP runs more than Rs.12,000 off the shelf.  Upgrade at the time of purchase. Often, you can get a better deal on a larger hard drive or a better monitor when you first order your computer. Even doubling the size of a hard drive may add very little to the cost, and upgrading to a higher-quality monitor may add only Rs.400. Depending on the brand or model of Dell Desktop , it could have one of several interface connectors--the part that plugs into the PC. These include the well-known VGA and the superior DVI connectors. If you're buying a nonbundled display, make sure it will work with the system you want--or that you at least have a money-back guarantee.