Resources

Here is a couple of links which will help you to fight with UNIX worshippers

Perfomance
http://www.tpc.org/tpcc/results/tpcc_perf_results.asp SQL outperforms competitors
http://msn.com.com/2100-1104-996706.html?type=pt SQL server climbs up in non-clustered results (territory dominated by Oracle/UNIX before)
http://www.spec.org/osg/web99/results/web99.html Web Server performance (IIS is on the same level or outperforms competitors)
http://www.infoworld.com/articles/hn/xml/02/05/01/020501hnaccenture.xml .NET servers outperform UNIX solution, plus costs only 2/3 of UNIX
http://www.veritest.com/clients/reports/microsoft/ms_netbench.pdf Server benchmark comparison of Linux and Windows 2003 (Windows 2003 outperformes (67-100%) Red Hat in file serving)

J2EE vs .NET
http://msdn.microsoft.com/vstudio/java/compare/ibmwebsphere/default.aspx Latest round of .NET vs J2EE. .NET outperforms and cheaper to run then J2EE
http://www.gotdotnet.com/team/compare/default.aspx Comparison of .NET and J2EE technologies
http://www.middleware-company.com/documents/j2eedotnetbenchmark.pdf .NET outperforms J2EE and cost only fraction of J2EE cost
http://www.microsoft.com/resources/casestudies/CaseStudy.asp?CaseStudyID=13620 7Eleven dropped J2EE after 6 month!! of investing in it in favour of .NET solution which took 3 month to implement
http://www.eweek.com/article2/0,4149,1388643,00.asp?kc=EWMS102049T Average availability of J2EE application is 88%.

Security
Security researcher thinks that Vista is more secure then Mac OS (Source)
Mac OS X had 5X times number of vulnerabilities compared to Windows in 2007 (Source)
Oracle database has more flaws than SQL Server (Source)
Linux developer warns about security of OSS software (Source)
New worm infecting Linux computers, recommended action once infected - reinstall OS. (Source)
http://news.zdnet.co.uk/internet/0,39020369,39226080,00.htm SpreadFirefox.com website got hacked and was taken down. Vulnerability in OSS software.
http://www.sisecure.com/resources/linux_windows.shtml Recent study reveal that Windows Server 2003 has fewer security flaws than comparable Linux server
http://www.zone-h.org/en/stats Linux is most compromised OS based on website defacement monitoring.
http://www.mi2g.com/cgi/mi2g/frameset.php?pageid=http://www.mi2g.com/cgi/mi2g/press/021104.php 1 year study found Linux as most breached in 24/7 online computing environment in terms of manual hacker attacks overall.
http://www.theregister.co.uk/2005/09/19/symantec_threat_report/ Firefox and MAC OS are not as secure as they are usually portrayed
http://zdnet.com.com/2100-1105-965130.html Anti-virus company which trusted it's security to UNIX was hacked.
http://zdnet.com.com/2100-1105_2-5224379.html Symantec's CEO says that open-source is no more secure the Windows.

Market Share and relevant info
August 2007 Netcraft survey finds that IIS is closing a gap on Apache (Source)
October 2007 study by IDC shows that Linux is loosing share to Windows (Source)
http://www.zdnet.com.au/news/software/soa/Criticism_mounts_over_Birmingham_s_Linux_project/0,130061733,339272293,00.htm Bimingham, England stops large scale Linux migration project becouse it was found that migration to Windows XP actually costs less then OSS migration
http://www.microsoft.com/windowsserversystem/forresterdotnet.mspx 56% of surveyed North American enterprises have chosen .NET as development platform
http://news.com.com/2100-1016_3-6041804.html?part=rss&tag=6041804&subj=news Windows bump UNIX as top server OS
http://www.port80software.com/servermask/top1000webservers/ Report from port80software showing dominance of IIS in Fortune 1000 companies
http://techupdate.zdnet.com/techupdate/stories/main/0,14179,2901102,00.html Report from META group outlining how Linux is over hyped and emotionally driven into corporate market.
http://www.microsoft-watch.com/article2/0,1995,1553624,00.asp One of the first non-Microsoft-funded total-cost-of-ownership studies by a major market-research firm, Windows still comes on strong
Misc
http://abcnews.go.com/sections/business/DailyNews/Jackson_010629.html Judge dismissed from Microsoft trial because of biased opinion
http://www.eweek.com/article2/0,3959,741723,00.asp TCO analysis from IDC group showing that Windows is cheaper to run then Linux
http://msn-cnet.com.com/2452-7344_3-5088206.html?tag=st_rn Windows almost is twice as fast to setup compared to Linux
http://www.microsoft.com/windowsserver/facts/analyses/eal4compare.mspx Comparison of Windows 2003 and Novell Suse Linux deployment in enterprise scenario

Windows vs UNIX