In "Microsoft's PC megabite" (Up Front, Sept. 16), the SYSMAR710 and the SYSMAR150 PCs from Microtel Computer Systems do not include a monitor, contrary to what was reported. The photo in "Gas guzzlers are safer? Pure bunk" (Environment, Sept. 9) depicted a Dodge Ram 3500 Quad Cab SLT but listed specs for the 1500 model. The 3500 weighs approximately 6,200 pounds, with 11/15 mpg. The data on death rates, however, were for all models of Dodge Ram.