It sounds like you're missing some files that LightWallet requires in order to connect and sync itself up.
Just download and unzip Monero 0.9.1.0 Hydrogen Helix, copy simplewallet.exe, libeay32.dll, libwinpthread-1.dll, and ssleay32.dll then paste those files into your LightWallet folder. Once you've done that LightWallet should be able to sync itself up and display your funds.
You mightn't need all those .dll files but it can't hurt the copy them all. ;)