I had sent you information back on 02/29/2008 as a reply to this thread but it must have got deleted.
Here is the thread from that day.
I finally got this to work in my 11g database with Database Vault.
I got to the ILM login page when I exchanged p=4550:10:2805095104274743
The documentation for logging into ILM 1.2 seems to be not quite accurate.
What I saw on that page were 2 boxes:
1. Database User
So you actually need to login with a "database" user account.
Initially I logged in as "SYS" just to see what would happen.
Then I was able to see the ILM tabs and menus.
I then went into OEM and created a new database user "ILM_DB_ADMIN".
I followed the instructions for executing the grant_privs.sql script to that newly created database account.
I was then able to login with that database account.
Now the url http://oraprod-dr.lodgian.com:8080/apex/f?p=737677 immediately refers to the ILM login page.
I would not think that this is a "backdoor" login method into ILM since the documentation does mention that you must use a "database" account.