According to this link
i need to add a line to the config.sys file, i use Vista so i edit c:/windows/system32/config.nt with notepad and when i try to add :
i can't save the file!
Message with notepad++:
"Please check whether if this file is opened in another program."
"unable to create the file.Check the name and path."
Note: If you work under Windows, you may get an Out of space environment error when you try to start Tomcat. There are two ways to fix this: either change the initial memory setting of the DOS window to a value greater than 3200 OR edit the config.sys file and add the following line: SHELL=c:\PATHTO\command.com /E:4096 /P.
Or where can i go to change the setting of the DOS window?