EDIT: THIS INFO IS OBSOLETE. DO NOT FOLLOW THIS GUIDE
If you need to install Novacom drivers, use
Universal Novacom Installer or WOSQI
=====================================
This is an alternate method from the
WebOS-Internals one, on how to install Novacom on Windows 7. This one is for the average user who wants an easy install.
- First off, you'll need to download the WebOSDoctor recovery rom (or if you're using the current WebOS Quick Install, you'll already have this file): Sprint WebOSDoctor 1.2.1 or Bell (Canada).
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- Download and install Orca. It's a tool from Windows SDK to easily edit Microsoft Installer packages. It's a very quick and simple install.
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- Go to where you downloaded the WebOSDoctor recovery rom and right click on it. Choose "Open with", then "Choose Default Program" and choose whatever archive manager you use (WinZip, WinRar, 7-Zip, etc.).
- If you don't have any archive manager, I recommend 7-Zip, it's free.
- If your archive manager isn't listed, hit the "Browse" button and navigate to find it.
- Make sure "Always use the selected program to open this kind of file" is not checked. (we want "Java(TM) Platform SE binary" to always be the default)

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- Open up the resources folder. Scroll down through it till you find the 2 MSI files (NovacomInstaller_x64.msi and NovacomInstaller_x86.msi).
- For 32bit Windows 7, extract "NovacomInstaller_x86.msi"
- For 64bit Windows 7, extract "NovacomInstaller_x64.msi"

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- Right click on the extracted MSI file. Click the "Edit with Orca"

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- On the left "Tables" list click "InstallExecuteSequence" and on the main table, look for "installumdf.08B8BE2B_9174_49D1_84B0_40324FD7DE34" and delete it. Save and close.

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- Run the msi. Everything should install properly

Credits: Based on work found at
CodeUtopia
[Moderator's note:] Here are the current webOS 1.2.1 Sprint and Bell links (from cas_esq,
as of 11/7/09):
Sprint WebOSDoctor 1.2.1 or
Bell (Canada)