Username Password Issues

[Ivar]

Hi All

First Time Posting Here

Using Office 2002 on Win 7

I have Database 1 (Access 2002 format), Double Click mdb File, Access Asks
For Password which I enter and Database Opens. All is well.
I copied a different database on to hard drive (Access 2000 format) . I
double Click mdb file and it asks for user name and password.
So I went to Select Tools/Security/Workgroup Administrator and joined the
MDW file that I got with the new database did a few clicks and other stuff
and joined the work group
So now I can double click on Database 2 mdb file, enter user name and
password and database opens, all is well.
However: Try to open database 1 and I am now prompted for user name and
password instead of just password.
If I enter the user name and password that opens Database 2 then I can open
database 1
I want to keep the username and password security on Database 2 as it is,
but I want to be able to Open Database 1 just with it's old password. (which
is different to Database 2 password.
I have no idea how to do this. So far I have tried nothing because I fear I
will break the security of one or both and then I can't open at all.
How can I get back to where I was with Database 1 (just old password only)
without breaking anything

Thanks

Ivar