PC manufacturer Dell Computer has dropped the prices of some models below the $1000 mark for the first time. Pricing on some models from its Dimension PC range will now start at $999, the direct sales giant said in a statement. The models affected by the price cut have a 566MHz Celeron processor, 32Mb of memory, a 7.5Gb hard drive, and come equipped with Windows 98 and Works Suite 2000, Dell said.