CuteMouse is an excellent and very small footprint mouse driver for DOS
"CuteMouse is a DOS based, open source mouse driver, which supports many protocols of serial and PS/2 mice. It can search for a serial mouse at all COM ports or only at a specified port.
An important CuteMouse feature is its small memory footprint: the resident part (TSR) occupies less than 3.5K. CuteMouse can also install itself in upper memory, when available, without requiring external utilities such as the DOS 'lh' (loadhigh) command. "
it can be found at
http://cutemouse.sourceforge.net
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