STABLEPRO for Windows provides a pre and post processor for data input and output viewing for STABL4 or STABL5. Various versions of Program STABL have been well accepted as useful tools for analyzing the stability of slopes. However, the series adopts a command-line format for data entry which is inconvenient for infrequent users. The computer program STABLPRO has been developed specifically for users to ease their modeling process and to enhance the graphical observation of slope boundaries and critical slip surfaces. This computer program has been written in 32-bit programming code compatible with Windows 98, 2000 and XP platforms. STABLPRO thus greatly enhances STABL4, a publicly-available program, and several user-friendly features are presented. STABLPRO was written in the Windows platform and uses an enhanced-graphics interface to implement pull-down menus, dialog boxes, option buttons, and grid-cells for data entry. The user may read information on the screen, then type input at the specified entry field. The entered data can be changed freely by moving the mouse to the location of a particular field. The user may select either English units (in. and lb) or S.I. units (m and kN) for input data.