Installation Error

Dears,

I am installating ECC5 on SQL database,Windows2003 server.We already have Our Solman 7.0 installed on that server.During installation i used instance no-02.

There were two options

1-Create new database with new SID.

2-Use existing database

In which i choose 1 option. Am i right.

Now In central instance installation in step create or register services its showing error:

ERROR 2007-05-04 11:02:37

FSL-06002 Error 14001 (This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem.

) in execution of a 'CreateProcess' function, line (284),with parameter (E:\usr\sap\PRD\SYS\exe\run/sapstartsrv.exe ...).

Please suggest do i need to perform some addtional steps before starting installtion as already one instance installed on that server.