You can pack the map to a RaR and attach it to your post, or you can use TMS
It should be mentioned that TMS becomes very useful when you want to submit your map to multiple Soldat forums, like this one, elitectf, realsol, etc and only want to upload the map once. Once it's uploaded to TMS, you can just copy + paste the bb code it generates to as many forums as you want. And if you want to revise your map, just go to TMS, login, and update the files / screenshot. In addition to being very easy to use and providing easy access to your map from everywhere, the BBC also has little auto-updating images that tell you the number of times the map was downloaded, in real time.
For example:
this,
this,
this, and
loads upon loads of more.http://tms.jrgp.org
