Could I get an industry with 10 (or more, or course)firms, of which 2
have negative P/E ratios?  I'd like the names of 10 of the firms,
including the 2 with negative P/E ratios, and their ratios, please. 
Thanks.

Hello,

Here are 10 such companies in software with their P/E ratios according
to Yahoo! Finance, along with links to Yahoo's profiles of each
company:

3-D Systems Corp. -- -97.4 P/E
http://biz.yahoo.com/p/t/tdsc.html

3Si Holdings Corp. -- -1.2
http://biz.yahoo.com/p/t/tsih.ob.html

Activision Inc. -- 21.35
http://biz.yahoo.com/p/a/atvi.html

Adobe Systems Inc. -- 25.83
http://biz.yahoo.com/p/a/adbe.html

Citrix Systems Inc. -- 12.54
http://biz.yahoo.com/p/c/ctxs.html

Electronic Arts Inc. -- 62.58
http://biz.yahoo.com/p/e/erts.html

JD Edwards & Co. -- 42.84
http://biz.yahoo.com/p/j/jdec.html

Microsoft Corp. -- 33.67
http://biz.yahoo.com/p/m/msft.html

Symantec Corp. -- 105.87
http://biz.yahoo.com/p/s/symc.html

Websense Inc. -- 29.76
http://biz.yahoo.com/p/w/wbsn.html

I hope this answer meets your needs. If not, please request
clarification.

Search strategy
Yahoo stock screener
://www.google.com/search?sourceid=navclient&q=Yahoo+stock+screener

great, thanks