Problem when using Web Parts

Question

Hello friends,

I am new in Web parts.

when I user web parts it show me an error:

"Failed to generate a user instance of SQL Server due to a failure in starting the process for the user instance. The connection will be closed. "

for solution i got answers to resume SqlExpree located on that path :

C:\Documents and Settings\<User>\Local Settings\Application Data\Microsoft\Microsoft SQL Server Data\SQLEXPRESS

can any one tell me if I remove this file then it never show any problm when Im using SqlExpree. and no any others changes I required.

thank

Neha