Hi, this would be my second time showing my desktop in forums, but I need some help please.

^ This is the picture of what my desktop looks like.
You see that start menu, it in classic mode, i like classic mode, but i was wondering how i can chagne the looks of it, possibly turn it black or various difference colours.
So that my first problem.
The second problem is this.

Each time i take a screenshot of my stuff, i have to edit it, the only exceptions is in games.
So you can see what happens when i take a screen shot.
Another thing is when you look at that 2nd pic, that black streak acts like a wall, if my mouse touches that area it won't go any further.
BUT is my mouse is up there and i move it over, it gets lost!, then i have drag my mouse back to the desktop.
You know what i mean?
So I really need that to be fixed too!
Here are my computer specs.
17" Flat Screen CRT 1280x1024 @60mhz, max res = 1600x1200
Intel P4 2.53Ghz (no HT, no OC)
Nvidia Geforce 4 ti 4200 128mb (no OC)
512mb DDR
WD 120GB @7200 rpm
WD 160GB @7200 rpm
Aside notes, about 2 years ago i was playing with my S-video cable and my TV, and it worked, then i formatted my computer. About 3 months ago i tried to run S-video but i messed up!, and it took my several hours to get my desktop back to normal, but the side effect is that picture 2!.
I think my GPU or something still thinks I'm using 2 screens or something, i don't know, im really just confused!! LOL Plz help.
I have the Latest Nforce drivers, i also have Nview options disabled, i enabled them one day to look at it and it was boring, and it was not able to give me my temps for my GPU

.
I do want my GPU temp, but i wanna get my Desktop problem solved aswell.
Well, i hope you can help.
Thanks,
MysticGolem