I'm not familiar with wblite. If you link me to it I can give more exact instructions.
The LhA file I linked you to was a stable version of the LhA archiver. To dearchive a file it would be something you first drag the .run file I pointed you to to the ram disk. Then double-click the ram disk icon, from the Windows menu go to the Show item and select All Files from the submenu. When workbench refreshes the window with all the icons visible, double-click the .run file you just dragged there. There should pop up a requester with the filename that you just double-clicked on. Click on the button that tells you to execute the program. The .run file will uncompress itself onto the Ram Disk.
The next step is to copy the lha program to your boot disk. To do that, highlight the window for your boot disk or if it isn't open, double click on your wblite disk. If it looks empty, do the Show All Files menu thing again. Drag the lha program from the RAM disk to the C directory.
Now comes the part I can't really steer you through by remote control: reformatting your flash card. On a standard workbench install there is a utility called HDToolbox that lets you reformat and partition hard-drive like devices. I suspect wblite doesn't have it, in which instance you may be in trouble.
Before I try to help you through the rest of your install process, you'd better post more information about your system boot disk.
