I know, just the off chance he takes a bus up from Singapore to Pudu or Kelana Jaya(forget if Roadways goes to Singapore or not, this service stops at Kelana and Shah Alam) he could use the LRT to get to Kelana and use the bus service from there. Even from airport he could use the KLIA train to get to KL central station and change to LRT :P Man, this could be a bit complicated to try and use...:P