INT 15 - DESQview v2.00+ - "FINDMAIL" - FIND MAILBOX BY NAME
        AX = DE0Eh
        ES:DI -> name to find
        CX = length of name
Return: BX = 0000h not found
             0001h found
                DS:SI = object handle
SeeAlso: AH=12h/BX=1200h"GETNAME"

Special mailbox names:
 "COM1" ... "COM4"      RBcomm using COM1 ... COM4
 "DESQview/X Help Engine"
 "DESQview/X Network Server"  Network Manager
 "DESQview X Server0"   X-Windows server
 "DESQview X Server7"   X-Windows printing service
 "INBOX"                DESQview/X LPD requests
 "OUTBOX"               DESQview/X LPD responses
 "WAITBOX"              semaphore to synchronize DESQview/X LPD communications