1) Welcome to the Party!
2) As you are obviously new here, I have some suggestions to help us all help you:
When you post, please post your entire configuration including (but not limited to) your installation method and vicidial version with build.
This IS a requirement for posting along with reading the stickies (at the top of each forum) and the manager's manual (available on EFLO.net, both free and paid versions)
You should also post: Asterisk version, telephony hardware (model number is helpful here), cluster information if you have one, and whether any other software is installed in the box. If your installation method is "from scratch" you must post your operating system and should also post the .iso version from which you installed your original operating system. If your installation is "Hosted" list the site name of the host.
If this is a "Cloud" or "Virtual" server, please note the technology involved along with the version of that techology (ie: VMware Server Version 2.0.2). If it is not, merely stating the Motherboard model # and CPU would be helpful.
Similar to This:
Vicibox X.X from .iso | Vicidial X.X.X-XXX Build XXXXXX-XXXX | Asterisk X.X.X | Single Server | No Digium/Sangoma Hardware | No Extra Software After Installation | Intel DG35EC | Core2Quad Q6600
3) Setting up a carrier has been covered in the forum so many times it's silly. LOL I note that your "dial(" line has some unusual inclusions in it.
4) Change your dialplan to match an existing standard one and you may be on your way. Note that you should NOT be including "gradwell" anything directly in the dial command. The carrier to which you'll send the call and the extension that will be dialed should both be addressed as Variables. While the EXTEN variable is automatically going to be the number being dialed, the carrier will be identified by a properly created Globals String.
5) _9XXXXXXXXXX is NOT a good US extension pattern. _91NXXNXXXXXX is the proper us extension pattern. Note the "1" and those "N"s. While the "N"s being replaced by "X"s will not kill your dialplan, that missing "1" definitely will.
6) We generally only charge $25 to configure a standard carrier. Seriously. And there are LOTS of samples of properly configured carriers on this forum.
Happy Hunting!