Check out these tutorials in the Hangar:
[ame="http://www.orbithangar.com/searchid.php?ID=3072"]Shuttle to ISS direct ascent playback[/ame]
This one is a direct ascent with the Shuttle, docking in approximately 15min after launch! :thumbup:
If you are a fun of the XR series, (i find these ships a little bit more challenging than the DGIV since you also have to use SCRAM engines) try this tutorial:
[ame="http://www.orbithangar.com/searchid.php?ID=3691"]XR2 to ISS 37 minutes[/ame]
Takes an XR to the ISS in 37min from launch.
Or you can check out my playback where i take an XR2 with "expert" settings to the moon and back in less than 48 hours. Time from take off to docking with Mir: 23 min. (My personal best with these settings is 18 min.)
[ame="http://www.orbithangar.com/searchid.php?ID=4367"]Expert/Realistic XR2 to the moon and back in 48 hours[/ame]
In general, look at the map mfd and wait until your target's ORBIT is about to pass over your current location (about one degree "behind you") and then wait until your TARGET is also about to pass over you. (For Mir i begin my ascent when it's about 13-15 degrees west of me, using the map mfd.)
Take off in the correct heading and get to an Apoapsis of about 160K (Slightly above the atmosphere.)
By the time you reach an altitude of 100K your target should be slightly ahead of you, but since you are flying much lower, you are also going much faster.
So at this altitude (about 100 - 105 Km), switch on the docking mfd, set your target and press the hud button to see this information on your... emmm... hud!
Use rotation thrusters to turn to the marker that shows you where to burn to null your relative speeds and make a burn untill you bring your relative speed close to zero.
Then turn your nose at your target and burn untill you have a satisfactory speed to get you there fast.
As you approach, turn back and burn to null your relative speeds and from there on... it's a standard docking.
Hope this helps.
Happy orbiting.