TimeSerial(hour, minute, second)
the above function generates an access time - so in your case
myaccesstime = timeserial(elapsed\60,mod(elapsed/60),0)
explanation
mod gives remainder of division, so mod(elapsed/60) gives left over minutes eg elapsed of 490 will return 10
\ operator is integer division, ignores remainder so 490\60 gives 8
so timeserial(elapsed\60,mod(elapsed/60),0) with elapsed - 490
should give you a time of 08:10.
hope this helps (and hope it works!)