ie6 is outdated, even ie8 on most websites will give you a cannot be displayed error, which is why I suggested firefox, I only use ie8 for microsoft updates when I am reinstalling xp, and for a few other websites.
ie8 is ie8-windows xp-x86-ENU.exe and it is 16.1mb
KB976749 is an ie8 update and cannot be installed until ie8 is installed.
and yes you need sp3, microsoft updates will not work without sp3 being installed.
http://www.dell.com/support/home/us/en/19/product-support/product/latitude-d830/drivers
above is the dell website for drivers for all latitude d830 if you input your service tag number you will get drivers specific to your d830
you can follow instructions below if you are unsure what the driver is:
How To Find Drivers For An Unrecognized Device
1. Open
Device Manager (Control Panel>System>Hardware>Device Manager)
2. The hardware whose drivers are missing will appear as Unknown device, so it's easier to locate the device.
3. Right click on the unknown device and click on
Properties.
4. Under the Properties window click on
Details tab and select
Device Instance Id from the drop down box.
5. You should see a code similar to this
PCI\VEN_
8086&DEV_
27DC&SUBSYS_30868086
&REV_01\4&1E46F438&0&40F0
6. The portion of the code highlighted in
RED is the Vendor ID and the portion highlighted in
GREEN is the Device ID. In this example:
Vendor ID = 8086
Device ID = 27DC
7. Once you have obtained both the IDs, proceed to
http://pcidatabase.com/
There you can either search for the vendor from the vendor ID or directly get information about the device along with the vendor name by searching with the device ID.
8. Then from there you can go directly to the hardware manufactureres website and get the driver.