Seems to me you've made the piece in milkshape, not textured it, loaded it in DB and said texture object "*.bmp".. Dark Basic will texture it 1.0x1.0 scale.. so for one face or side or plane it will cover the whole side with the texture.. like you've seen.
Load up Milkshape, open your model. If it's just one Object in your groups list you can have a quick go at texturing one side.
Go into the Materials tab, half way down it says <none> beause you havn't loaded in a texture. Click on one of the top <none>'s.. left or right I dunno and you can then BROWSE for your file. Load it in and you should see a Sphere above with your texture on.
Go into Groups or Select mode and select the whole lot (because it's one object). I almost forgot to say, after having selected the box you need to go into the material tab and press ASSIGN. then when you go into the groups menu you should see Box01 <*.bmp"> .. not <no material>.. phew.
Press Ctrl-T or go into the File>Windows>Texture Co-ordinator. Here you should see your texture as you made it in Paint or PSP or whatever. You made one object so it will be in the top Pull down list. Box01 or something. Just below it will say Front.. this means you will see your texture being mapped out from the FRONT view.. like holding up your .bmp out infront of you in your hands and walking up to the model from the front. Fun huh?
If you see no funny WIREFRAME like lines press the Remap button.. you should see your box wireframe from the .... front! If not this means you HAVN'T SELECTED IT.. so go back to the Groups and select it or use the Select > Face tool and make it turn red.. then go back... now the Front and Back should be textured.. the back will have it backwards but hey. your writing will be backwards... whatever.
If you want to texture your sides aswell.. then you will need to regroup... this means select the LEFT and RIGHT faces.. ignore the Top side Bottom side Front face and Back... just the sides.. and go into the group menu. With the Side Faces selected press Regroup and Rename them Sides. Now when you go back into the texture Co-Ords you can pull down the menu that Said Box01 and select Sides. Make the other pull down menu and select Right or Left and Remap if you need to.
It works out alittle like that but sometimes doesn't go to plan.
Lots there/ good Luck.
" Ahh to finish something! My boy, have you ever accomplished anything? "