"SendKey" and an online game makes me think you are trying to write a bot or something of that nature. Is that correct?
If so, then perhaps the game servers have some sort of bot-detection system built in that is simply gobbling up your requests and ignoring them.
If you can't explain your problem properly, we can't help. So far you haven't posted a single coherent thought. Tell us what you are trying to accomplish and don't assume that we can figure your problems out with random phrases.
*pre-emptive celebratory nipple tassle jiggle* - Sean Ewington