Guys! Currently I hv Elnova T-605 ups, it gives me 30 minutes backup approx. Now I want a UPS which can give me more backup, like 4-5 hours (or more than it as possible). So pls suggest me which UPS will be the best and how much it'll cost approx? Second, I'm planning to purchase a new Keybaord and mouse too. Pls suggest me some good keyboard & mouse. Which is the BEST keyboard and mouse? Pls mention the prices too... thnx!