Generation-X is a Vision Mission for a future x-ray observatory. It is to have an effective area of 150 m<sup>2</sup> at 1 keV, a resolution of ~0.1 arc seconds and the goal of probing the universe from redshifts of 5 to 10. Fabrication of the telescope is quite challenging and the best approach is unclear. We report our study of the use of Kirkpatrick-Baez telescopes applied to Gen-X. Such systems can be manufactured relatively inexpensively using simple flat mirrors. Huge effective areas can be obtained without the need for complicated deployable optics. In this study we found that Kirkpatrick-Baez optics provide an attractive and feasible approach to fabrication. The trade off is a 5km focal length.