You might try downloading Diogenes, which is a freeware browser-based program intended to search the TLG and PHI corpora, but which also comes bundled with L&S for Latin and LSJ for Greek.
The best thing about it, IMO, is that it’s lightning fast (I find Perseus very slow at times), and you can do full-text searches inside entries (great for collocations, etc.). And it does a great job of parsing inflected forms you want to look up in the dictionaries.