TP701cs screen looses sync w/DOS box w/Win95

[jim@why.net (jim)]

Hi,
I have a ThinkPad 701cs on which I just installed Win95.  I upgraded the
bios and the ess audio drivers as suggested in this newsgroup. 
Everything works great except for one small problem.

Whenever I start a DOS box in a window, the screen seems to loose sync. 
If I do an alt/enter to change to full screen and then another alt/enter
to change back, everything is back to normal.  

I'm using 65000 colors and the standard driver Win95 picked for me
(Chips and Tech acellerated).

Anyone else had this problem?

Thanks for the help,
Jim McGhee