First of all, you have to install WinUAE. This is a rather compicated thing to do, and you have to get an Amiga kickstart ROM image as well... but I'm sure there are some other sites out there that can tell you how to do. But be sure to install your amiga system as a shared file system so it shares the files with your PC.
Now I will assume that you have a working WinUAE configuration on your PC. Now install BL on it (you need an archiver called lha to unpack the archive). After that, just doubleclick BL's install icon. When choosing screenmodes for BL, I would recommend you to allways select PAL and NTSC screenmodes. The screenmodes of Picasso96 works most of the time, but one of AmigaDos' flood fills that BL uses ("Fill within outline") is not implemented in Picasso96.
If you not are an amiga expert, this is the best you can do, running BL on your standard WinUAE configuration. This is probably hard enough if you never used the amiga before...
dh2:Amiga/Bench/C/assign c: dh2:Amiga/Bench/C/ Resident >NIL: C:Assign PURE makedir ram:clipboards ram:t ram:astor assign bench: dh2:Amiga/Bench/ assign MUI: Bench:MUI assign Astor: Ram:Astor assign BL: Bench:BorayLetter/Letters assign pmods: DISK1_VOL2:mods assign DownLoad: DISK1_VOL2:temp assign mods: DISK1_VOL2:mods/mina assign LOCALE: Bench:Locale Bench:MUI/Locale assign KEYMAPS: Bench:DEVS/Keymaps assign PRINTERS: Bench:DEVS/Printers assign REXX: Bench:rexx assign CLIPS: Ram:Clipboards assign T: Ram:T assign work: DISK1_VOL2: assign ENVARC: Bench:prefs/env-archive assign SYS: Bench: assign C: Bench:C ;assign S: Bench:S assign LIBS: Bench:LIBS Bench:Classes Bench:MUI/Libs assign DEVS: Bench:DEVS assign FONTS: Bench:FONTS assign L: Bench:L assign sel: bench:sel/ ;C:MakeDir RAM:T RAM:Clipboards ;RAM:ENV RAM:ENV/Sys mountenv >nil: ;C:IPrefs ;C:ConClip ;Path >NIL: RAM: C: SYS:Utilities SYS:Rexxc SYS:System S: SYS:Prefs SYS:WBStartup SYS:Tools SYS:Tools/Commodities setenv BLMAIL execute bench:S/attach run >NIL: BL BL:auto.blWhat I do here is to take over the system from my main amiga partition. I don't start Workbench or anything else that just takes time for this purpose. In the end it starts BL with a special .bl file (D:\Amiga\Bench\BorayLetter\auto.bl) copied there by another script on the PC side.... this happens before WinUAE is started by the script below: (C:\Windows\command\bl.bat)
@ECHO OFF copy >C:\nil %1 D:\Amiga\Bench\BorayLetter\Letters\auto.bl echo >C:\nil %1 d:\winuae\winuae.exe -f d:\winuae\configurations\Bl.uaeWhat this PC script does is to copy the file that is given as an argument to the special auto.bl and then run WinUAE with the BL configuration file which in turn executes my special startup-sequence that starts BL with the auto.bl. So for now, you can open a dos prompt and write "bl hello.bl" to display hello.bl with BL in a window on windows... Confusing? :-)
But to be able to doubleclick a .bl file in windows, you have to do one more thing - configure Windows! I have the Swedish version of windows, so I don't know the correct English names for the different menus and buttons, but I can guess. Open Explorer! (not internet explorer, but the ordinary file explorer). In the menu "Show" (I am guessing here :-) select "alternatives" and a dialog pops up. Click on "file types"! Click on "new type". Another dialog pops up. Fill in:
Description: BorayLetter MIME: application/x-bl Extension: .bl Actions: ...press "New" and call the new action "open".Fill in the program for the action: C:\WINDOWS\COMMAND\bl.bat
Here is a picture of it (in Swedish):