mike79,
I take it that you want to apply for SIA cadetship. If you are then you don't need to write a resume or a cover letter. Just go and create a profile and fill in your details, apply for the position and follow the rest of the instructions that you want. I include the link below. I hope it helps.
http://singaporeair.recruitmax.com/M...al/default.cfm
cheers and all the best