Re:ARDAgent is Apple Remote Desktop (Score 1)

HI I just registered and Am relatively clueless but I have downloaded something like this, or not that is 'eating up' my hard drive. It is a MacBook Pro with 4GB of Ram and ~120GB hard drive and now with only 33GB on there it is telling me that it has 86 MB free. I have backed up and will do a clean install but if anyone can help a non geek but fairly savvy Macophile I would appreciate not having to do the install. I tried to run the script on the link in this thread but it read syntax error HELP