Ok...Please help

I have a Dell Laptop, Inspiron 2650 with a Win98 drive setup to run some of my older games and apps.

For some of my REALLY older games, I'm using Dosbox. It is running rather smooth and so far no major trouble EXCEPT....

Full Screen shows streaks/lines, no matter what setting I set in the conf file, Full Screen always shows these slight streaks and lines in the upper and lower third of the screen.

I know it is not the video driver, because I can run some of these games full screen without the graphic issues without Dosbox, but I then loose my onboard sound and USB joystick support. Plus, without Dosbox, some of the games will not run at all.

Here is the skinny:

Dosbox 0.61

Dell Inspiron 2650 Laptop, P4 1.6Mhz 512 MB RAM
Windows 98SE all latest windows updates

32MB NVIDIA Geforce2 Go, hacked NVIDIA drivers for use with Win98 (no Geforce2 Go official drivers exist for 98) Driver version 4.14.10.5664 (last NVIDIA reference for win98 I could find)

Sigmatel AC'97 onboard sound. Driver version 5.10.7121,(only driver version I could find to work with 98) no native DOS support for this version of the sound chip that I could find.

I've seen some posts about changing some lines in certain .cpp files, but I don't have a compiler and I'm not really knowledgeable on that type of stuff either.

Is there a way to get full screen without these lines???? Please help.

Again, Dosbox is running this stuff great in a window, I would just prefer fullscreen.