Create a user level in Access Log In and display logged in user on opening Form

[lomiA]

I have created a database with a user-log in and I was able to create a table with usernames with passwords and it worked perfectly when I logged in. Once I am able to log-in, it will open a form that shows 3 buttons: Data Entry, Search and Repair and Maintenance.

I have 2 questions:
1. How could I display the user who logged in on every Form and Report that I choose to use in the database? (for e.g. for the first Form, I could write Welcome Lomi!)
2. How could I create a permission level for the following scenarios? I am using MS Access 2007
(Scenario 1: All users could use the Search button, while the Data Entry and Repair and Maintenance buttons are disable)
(Scenario 2: Only the Admin and maybe an assigned Manager could have permission for all 3 buttons)
(Scenario 3: Only assigned Managers could use Repair and Maintenance, while the Data Entry and Search buttons are disable)

Thank you.

[ranman256]

I have settings for each user in tUsers. fields: UserID, Level, Name.

when the starts the app, then collects that users settings.
gsUserID = Environ("Username")
(its actually a class, but you can use global var names)
then it does DLOOKUP() to get THAT users settings from tUsers
sWhere = "[userID]='" & gsUserID & "'"
gsULevel=DLOOKUP("[Level]","tUsers",sWhere)
gsUName=DLOOKUP("[Name]","tUsers",sWhere)

then when a form is opened, various controls are enabled/disabled according to
the users settings

cboLevel.enabled = gsUserLevel>1
btnAdmin.enabled = gsUserLevel=3