I find that the Alt-K keyer window works just as it should under XP. Text is 100% readable, operation smooth with the RttyRite CW window, all just as it was under Win 98SE. Perhaps reported problems are a machine-specific issue? [Running WL 10.30 on an AMD K6 400 mHz machine with 256MB RAM, dual boot XPHE and Win98SE.] Jon, K1US