破解JBuilder2005 报以下错误救命啊

Microsoft Windows XP [版本 5.1.2600]
(C) 版权所有 1985-2001 Microsoft Corp.

C:\Documents and Settings\Administrator.LIAOSC>e:

E:\>e:\Borland\JBuilder2005
'e:\Borland\JBuilder2005' 不是内部或外部命令，也不是可运行的程序
或批处理文件。

E:\>cd e:\Borland\JBuilder2005

E:\Borland\JBuilder2005>java-jar shock.jar
'java-jar' 不是内部或外部命令，也不是可运行的程序
或批处理文件。

E:\Borland\JBuilder2005>java -jar shock.jar
Registry key 'Software\JavaSoft\Java Runtime Environment\CurrentVersion'
has value '1.4', but '1.5' is required.
Error: could not find java.dll
Error: could not find Java 2 Runtime Environment.

E:\Borland\JBuilder2005>java -jar shock.jar
Registry key 'Software\JavaSoft\Java Runtime Environment\CurrentVersion'
has value '1.4', but '1.5' is required.
Error: could not find java.dll
Error: could not find Java 2 Runtime Environment.

E:\Borland\JBuilder2005>

同样
E:\Borland\JBuilder2005>java
Registry key 'Software\JavaSoft\Java Runtime Environment\CurrentVersion'
has value '1.4', but '1.5' is required.
Error: could not find java.dll
Error: could not find Java 2 Runtime Environment.

哪位大侠知道啊
救救小弟吧
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