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Install your Chipsets (all three of them) first, (needed to insure success with other Dell installs, operation of
your PCMCIA etc., etc.,) then Dell QuickSet which has the 'icon'/'font' utility as well as other features
(like a lot of your Fn functions).

System and Configuration Utilities

Dell Client Configuration
Dell Internet Explorer Scaling Utility>>>>>>>>>>>>This may also be needed (for IE Font Scaling)
Dell Notebook System Software >>>I have better results with the (50MB) previous version of this one.*

You should also install some others as well, like "Input Device..." for ALPS TTouchPad/Stick Console, etc..

Should reboot between each install.

*Click "Other Versions" and use this; Dell Notebook System Software, v.3.11.0, A18 Release Date: 11/6/2005

I prefer the "normal" 96 dpi, must reboot to take effect.

Some of the tabs left of 'Settings' also have 'font' choices.

Control Panel > Display Settings > Apearance > Effects > Screen Fonts > Clear Type/Standard