[solved, please delete/lock] Newbie needs help badly.

I'm having an issue that I don't exactly understand.
I'm on Windows 7, any other system specs don't seem to be an issue here.
Also, by "Newbie", I mean I'm just learning how to "really" program.
If you want me to elaborate on that, just ask. I'm finding it hard to condense that little story.

Every time I try to run one of the demos (I don't know how custom programs work yet), a window pops up saying this:

And here's the latest log file from the basic demo.

22:33:32: Creating resource group General
22:33:32: Creating resource group Internal
22:33:32: Creating resource group Autodetect
22:33:32: SceneManagerFactory for type 'DefaultSceneManager' registered.
22:33:32: Registering ResourceManager for type Material
22:33:32: Registering ResourceManager for type Mesh
22:33:32: Registering ResourceManager for type Skeleton
22:33:32: MovableObjectFactory for type 'ParticleSystem' registered.
22:33:32: OverlayElementFactory for type Panel registered.
22:33:32: OverlayElementFactory for type BorderPanel registered.
22:33:32: OverlayElementFactory for type TextArea registered.
22:33:32: Registering ResourceManager for type Font
22:33:32: ArchiveFactory for archive type FileSystem registered.
22:33:32: ArchiveFactory for archive type Zip registered.
22:33:32: DDS codec registering
22:33:32: FreeImage version: 3.13.1
22:33:32: This program uses FreeImage, a free, open source image library supporting all common bitmap formats. See http://freeimage.sourceforge.net for details
22:33:33: Supported formats: bmp,ico,jpg,jif,jpeg,jpe,jng,koa,iff,lbm,mng,pbm,pbm,pcd,pcx,pgm,pgm,png,ppm,ppm,ras,tga,targa,tif,tiff,wap,wbmp,wbm,psd,cut,xbm,xpm,gif,hdr,g3,sgi,exr,j2k,j2c,jp2,pfm,pct,pict,pic,bay,bmq,cr2,crw,cs1,dc2,dcr,dng,erf,fff,hdr,k25,kdc,mdc,mos,mrw,nef,orf,pef,pxn,raf,raw,rdc,sr2,srf,arw,3fr,cine,ia,kc2,mef,nrw,qtk,rw2,sti,drf,dsc,ptx,cap,iiq,rwz
22:33:33: Registering ResourceManager for type HighLevelGpuProgram
22:33:33: Registering ResourceManager for type Compositor
22:33:33: MovableObjectFactory for type 'Entity' registered.
22:33:33: MovableObjectFactory for type 'Light' registered.
22:33:33: MovableObjectFactory for type 'BillboardSet' registered.
22:33:33: MovableObjectFactory for type 'ManualObject' registered.
22:33:33: MovableObjectFactory for type 'BillboardChain' registered.
22:33:33: MovableObjectFactory for type 'RibbonTrail' registered.
22:33:33: Loading library ../../plugins\RenderSystem_GL.dll
22:33:39: OGRE EXCEPTION(7:InternalErrorException): Could not load dynamic library ../../plugins\RenderSystem_GL.dll. System Error: The specified procedure could not be found.

in DynLib::load at ..\..\..\..\OgreMain\src\OgreDynLib.cpp (line 91)


I kind of get what's going on here, but...not really...
Does anybody know exactly what's going wrong, and how to fix it?

ED: Oh...wow...I apparently had 1.7 installed with 1.6 at the same time.
No wonder it didn't work.