Travelling to Putrajaya, Malaysia?

I would like to travel to Putrajaya, Malaysia (Precinct 3) this weekend to catch a concert (: However, I'm from Singapore :( I'm rather clueless about travelling there. is there any low cost way (like direct coach to putrajaya) to go there? :D also, any kind Malaysian able to give me directions to travel from Berjaya Times Square, KL, to Putrajaya? Many Singapore-KL coaches stop there so I'm considering to go there first and continue travelling to Putrajaya. Feel free to recommend any routes! Thank you! :)