First post on the forum
I have to give a plug for Nello's NichExplorer, I was doing research the long way and can't believe the time it's saving.
I've already used over 10,000 credits, so I've found a slightly different method to Nez's, that is far easier on the eyes and gives you a deeper look at phrases you might miss.
1) Start with a phrase or keyword.
2) If it looks promising, open a tab in firefox and put the same phrase or keyword into
http://freekeywords.wordtracker.com/
3) This gives you a window with all the keywords that NichExplorer has. (you'll see why you need it in a second).
4) Back to NichExplorer.
Looking at the data, note all the promising keywords, but don't ignore too many

.
5)c&p the first promising keyword, (from the open firefox tab), into the NichExplorer "wordtracker Analysis" box, continue as normal, running Analysis on the word / phrase (Start Analysis).
DON'T EXPORT THE DATA
5)c&p the second promising keyword into the NichExplorer "wordtracker Analysis" box, continue as normal, running Analysis on the word / phrase (Start Analysis).
DON'T EXPORT THE DATA
6) as above for all the promising keywords.
After I've done this, THEN I export the data and open it in Excel, and sort by "Expected Traffic - Pages/Day".
This way I have one spreadsheet with all the keywords and I can see at a glance what has potential.
ENJOY
Eoin