..Windows 98 will show startmenu folders in a single column, with scrolling arrows at top and bottom.
To force it to use multiple columns again - default in 95 - you need to edit the registry. Open regedit.exe and find the key HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\Current Version\explorer\Advanced.
On the right-most pane, create a new dword value and name it "StartMenuScrollPrograms" (no quotes). Rightclick it, choose modify and enter "00 00 00 00" (no quotes). A string value set to "false" works too, most of the time.
Windows 2000 and XP have a check option to get this enabled/disabled. Milly Peters, reader of the
Langa List, submitted some reg lines to get this option available in 98. Copy and paste these lines in a textfile and give it a .reg extension:
Doubleclick and enter in the registry. Now go, within any window, to view/folder options/view and see a checkbox called "Multi-Column Start Menu" (this .regfile also added to download section). If it doesn't work for you, some people found it would only work with string values. So instead of entering "dword:etc.." at the three lines at the bottom, enter "false", "true" and "false" - with the quotes - instead.
For 98 only, import
this refile to have multiple columns again, or
this to add the checkbox.