Thanks everybody for answering.

The thing is that i don't want my users to feel any change. What happened before was that user could click on two different scripts. One that opened an MDB file the usual way (for editing data) and one that was used 90% of the cases - for looking at data (with /ro). It was done to ensure lack of mistakes - it often happened that user (with permissions) edited the data with no intention to do it.
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Hello.
I have the following problem. In our project we decided to use Access as link to SQL Server. So, we used Upsize Wizard to migrate our tables to SqlServer's tables. It was successful.
But for some users i wanted to grant read-only permissions for all data. Before the migrating i used to open Access app. with a script and write "/ro" - that gave only read-only permissions. But now user still can go inside the linked...