What exactly is happening? Are you getting the 'need more sources' message?

It's not the best idea to use Limewire for applications, anyway. Many are freeware/shareware versions which can be downloaded more safely from their respective websites. Many will contain viruses. If you do choose to test your luck, pay close attention to file size. Most (but not all!!!) viruses disguised as applications will be 1,000 kB or less in size. Also, make sure you have antivirus protection (you should do this anyway!).

Good Luck

Dano