Mark Crowley is still around and we've talked about updating
his work to Unicode, but I haven't had the time.
I think you need to search for archstyl.shx, not Archstyle.shx.
David William Edwards
SHXConvert - Replace SHX fonts in a DWG with component objects/Blocks
Compile/Decompile SHX fonts without AutoCAD
Announcing "PROJECT NEWPLEX - THE NEW STANDARD"
FONTasm! - Truetype to Filled SHX Font/DXF File Converter
CAD Font Services - Creation, Conversion, Customization