Silent W98se alarm clock, and is there safe Web music?..

What's a free bugless alarm-clock download for W98se?..
Sometimes I'm scheduled for something crucial.. and too often when I get deep into the Net I sometimes miss an appointment.. a Big Oops!.. I need something I can time-set to momentarily flash the screen-background a different color while I'm working on the Net... Is there such a critter?..

It can't be audio-based, because for the past five-years I've had the sound muted, after running into way too many OS damaging audio downloads... Too many times I've had to format-C after downloading Net music... The Web audio world seems to be extremely dirty and risky... Is there a totally safe way to download Internet music with W98se..?