Protel 99SE is prized for its "all-in-one" approach. The Design Explorer interface allows users to manage schematic sheets, PCB layouts, and bill of materials (BOM) within a single project file.
If you want to move forward with your project, I can help with: for specific Windows versions Locating component libraries for Protel 99SE Converting Protel files to modern Altium formats download protel 99se
Download the Protel 99SE ISO or setup files from a trusted archive. Protel 99SE is prized for its "all-in-one" approach