I have a task one has an estimated duration of 60 days.  I want it to begin 
task one 90 days prior to task two and task two cannot proceed until task one 
is complete.  Is there any way to reflect this scenario in project?

No. What you have there is a circular reference. Task 2 can't start until 
Task 1 finishes but Task 1 can't start until before task 2 starts which in 
turn is dependant on Task 1 which in turn......

What is the constraint? If management or customer say task 2 needs to start 
on a specific date, then task1 Starts 90d before task 2 starts. This is no 
problem. What's the driving event?

-- 

Rod Gill
Microsoft MVP for Project - http://www.project-systems.co.nz

Author of the only book on Project VBA, see: http://www.projectvbabook.com




"dtksocal" <dtksocal@discussions.microsoft.com> wrote in message 
news:34064A45-D952-4A87-8226-21A7F5BB7371@microsoft.com...
> I have a task one has an estimated duration of 60 days.  I want it to 
> begin
> task one 90 days prior to task two and task two cannot proceed until task 
> one
> is complete.  Is there any way to reflect this scenario in project?
>
> __________ Information from ESET Smart Security, version of virus 
> signature database 5063 (20100426) __________
>
> The message was checked by ESET Smart Security.
>
> http://www.eset.com
>
>
> 

__________ Information from ESET Smart Security, version of virus signature database 5063 (20100426) __________

The message was checked by ESET Smart Security.

http://www.eset.com

Yes, there is a way to do it. You double click task 2 to open Task 
Information dialog box, then click Predecessors tab, make sure task 1 is 
showing under Task Name, in the Type, the relationship should be Finish-to 
Start (FS), in the Lag, type 60d. 

"Rod Gill" wrote:

> No. What you have there is a circular reference. Task 2 can't start until 
> Task 1 finishes but Task 1 can't start until before task 2 starts which in 
> turn is dependant on Task 1 which in turn......
> 
> What is the constraint? If management or customer say task 2 needs to start 
> on a specific date, then task1 Starts 90d before task 2 starts. This is no 
> problem. What's the driving event?
> 
> -- 
> 
> Rod Gill
> Microsoft MVP for Project - http://www.project-systems.co.nz
> 
> Author of the only book on Project VBA, see: http://www.projectvbabook.com
> 
> 
> 
> 
> "dtksocal" <dtksocal@discussions.microsoft.com> wrote in message 
> news:34064A45-D952-4A87-8226-21A7F5BB7371@microsoft.com...
> > I have a task one has an estimated duration of 60 days.  I want it to 
> > begin
> > task one 90 days prior to task two and task two cannot proceed until task 
> > one
> > is complete.  Is there any way to reflect this scenario in project?
> >
> > __________ Information from ESET Smart Security, version of virus 
> > signature database 5063 (20100426) __________
> >
> > The message was checked by ESET Smart Security.
> >
> > http://www.eset.com
> >
> >
> > 
> 
> __________ Information from ESET Smart Security, version of virus signature database 5063 (20100426) __________
> 
> The message was checked by ESET Smart Security.
> 
> http://www.eset.com
> 
> 
> 
> .
>