Oracle HTTP Server

Hi friends,

-I installed Oracle 9i in my Windows XP desktop.
-I am using general purpose database.
-I unlocked the user HR.
-Now I run http://localhost/isqlplus
-I entered user name and password of the unlocked user.
-The browser displays page cannot be displayed

Why is this happening? Please help.

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- I opened services.msc
- Checked and knew that the oracle http service is not running.
- I tried to start the HTTP service.
- Message similar is displayed, indicating, some of the services not used starts and shutdowns automatically.
- This message keeps on comming, hence I cannot start Oracle HTTP service.

How can this problem be solved. Please help...
Do I need to format the whole computer to make this thing work? or there is any other way to tackle this problem.

Please Please help.

Thanks in advance,
Binayak P Silwal