How to estimate ordered probit models and probit model with seemingly unrelated?

[Titikarn Assatarakul]

Dear Statalist,

I have 3 equations
1) ordered probit model (Y1) has 3 values: 1, 2, and 3
2) ordered probit model (Y2) has 3 values: 1, 2, and 3
3) probit model (Y3) has 2 value: 0 and 1
Can I estimated by "seemingly unrelated" ?, and how to write command?

Thank you.
TITIKARN

[Joseph Coveney]

Is there a reason not to use gsem here?

[Stephen Jenkins]

Titikarn: Have a look at cmp (on SSC).