Are you sure you're in the correct forum? Ms Flightsim is discussed elsewhere.
- spot on, Jesper! I cannot believe this is being answered here like this in a professional pilots' forum.
jj - you cannot LEGALLY fly that procedure in LNAV which is what I suspect you wish to do. You would FAIL an IRT if you tried that, apart from possibly having an airmiss with other traffic. With any wind other than directly up or down the runway you would NOT maintain 'Runway Heading' in LNAV which is your clearance. IGNORE the advice you have been given here. 'Runway Heading' does not go to a fixed point. You cannot fly 'Runway Heading' in LNAV UNLESS you use 'Intercept the leg to', but as IRRenewal has correctly pointed out that will not work for a conditional waypoint in a 737. You CAN of course fly 'Runway Track' in LNAV if you need to.
There is a knob on the control panel labelled 'HDG'. Set 'Runway Heading' there and fly that until you see the numbers '3000' on your altimeter. Then do what comes next. If that fails, ask a 737 training Captain.