Question: tomcat 7 1 is not a valid win32 application?
Answer: Uninstall the Tomcat7 service if you have installed it already;
Download a 64 bit version of Tomcat 7 for windows (check this link to get the latest - I used the 7.0. ... 
Replace the tomcat7.exe and tomcat7w.exe files of the C:\xampp\tomcat\bin folder with those present in the recently downloaded zip file.