For using AISLER with Proteus 8 you will need to export your project as Gerber and Excellon Files.
Once you are done with your pcb design, please go to the top bar
Output >> Generate Gerber/Excellon Files
CADCAM (Gerber and Excellon) Output
Delete Assembly.GBR, Drill.GBR, Netlist.IPC and Read-me.TXT, since we do not use them.
Once you have all necessary files, change their name according to our file naming standard.
In the end your files should be named something like this. They can now be uploaded packaged in a zip folder.