VBA would be way more complicated that what I suggested, which is using VBScript code behind the form.

Another approach would be to use multiple forms, each for a different step in the process, with different controls set as read-only. That might be a nightmare to maintain and update.
Sue Mosher, Outlook MVP
Author of Microsoft Outlook 2007 Programming:
Jumpstart for Power Users and Administrators
http://www.outlookcode.com/article.aspx?id=54

"Studer" <Studer@discussions.microsoft.com> wrote in message news:215AB9FB-EB8B-47A6-81FB-8C774F542099@microsoft.com...
> No way of doing this without VBA code, that's what you are saying Sue, right?
> Now I'm in trouble...
>
> Thank you very much.
>
> Studer
>
> "Sue Mosher [MVP-Outlook]" wrote:
>
>> You could put code in the Item_Reply event handler to set certain controls on the reply message to be read-only. See http://www.outlookcode.com/article.aspx?ID=38 if you need information on how to work with controls in your code.
>>
>> "Studer" <Studer@discussions.microsoft.com> wrote in message news:8CA4770A-5B2F-48CC-9E42-FD862CA87528@microsoft.com...
>> > Hello,
>> > I’m developing a custom Outlook 2003 form in my enterprise for requesting a
>> > certain service to be made. One user will request the service by filling up
>> > certain fields of a form and a 2nd user will receive this request a reply to
>> > it, filling up other fields, saying if it’s possible to be done, by what
>> > date, etc.
>> >
>> > The problem I have is that when the 2nd user replies, he’s able to change
>> > the values inserted by the firs user, and I don’t what that to happen. How
>> > can I prevent this from happening?
>> >
>> > I’m using a message. I’ve tried with a task, but the problem remains.
>> > Thank you for your help.
>> >
>> > Studer
>> >
>>
11 JunCustom Form - read-only fields.Studer
11 Jun\ Re: Custom Form - read-only fields.Sue Mosher [MVP-Outlook]
11 Jun   \ Re: Custom Form - read-only fields.Studer
11 Jun      \ Re: Custom Form - read-only fields.Sue Mosher [MVP-Outlook]
12 Jun         \ Re: Custom Form - read-only fields.Studer
All times are in (US) Eastern Daylight Time (GMT -4:00)