Making the mouse easier to see
Even if you scale up the text in your browser it can still be difficult to surf around if you can't find your mouse cursor. Luckily there's ways to make your mouse cursor bigger and easier to find.
Making the mouse easier to see in Windows
From the Start menu: Select Control Panel > Mouse
Here you can change the size of your mouse cursor, add a mouse trail or make the computer show you where the cursor is every time you press the CTRL key. Note that the options available will be slightly different depending on what mouse or version of windows you have but the items above will be available on most PCs.
Making the mouse easier to see on Mac OS X
From the Apple menu: Select System Preferences> Universal Access > Mouse
Here you can drag the slider called Cursor Size to select how large you want the mouse cursor to be.