When you search for driver updates via the service tag number it is supposed to only list applicable drivers, not all the possibile drivers for a specific model.  However, sometimes that does occur and you are left to find the ones that are applicable to your specific hardware configuration. You are better off just manually checking for updates and installing applicable updates.  Some drivers listed on the Dell downloads can very well be the same version as is already on the PC.  Dell does not regularly issue updates, like the Retail device vendors do; Dell in most cases only issues an update if the device is not performing to their published specs, and in a few isolated BIOS cases to support additional hardware.   You should look at each driver and determine if the update applies to your specific system as some are issued to correct certain problems and may only pertain to specific hardware or software configurations.   BIOS updates should be closely looked at as a failed/corrupt BIOS update and the ONLY option is to replace the motherboard on a Dell.   The old adage applies to updates and especially the BIOS - "If it ain't broke don't fix it".
HI, I just received a new Dell Studio 16 w/Windows 7 Ultimate, and have been spending time setting it up, which is a story in itself, including getting a BSOD after installing a Java Update.  (I don't know if that was the culprit, but recovering to a restore point prior to that install seems to have fixed things.) My latest problem is with Dell Support Center.  when I launch it, the software recognizes my system's Service Tag (and it's displayed at the top of that window), but when I click on Drivers & Downloads on the left-hand side of the Dell Support Center window, an Internet Explorer window opens, again showing my service tag, and presenting me with filtering options.  If I choose Operating System Windows 7 64-bit, and click on Find Downloads, I'm presented with an extensive list, some of which doesn't seem to apply to my configuration (e.g. I don't have the hardware referred to), and quite a few selections that seem to be no more current than I already have. I actually installed a couple of new components that said urgent, but after rebooting and going through the same process with the Dell Support Center, the same selections appeared yet again.  It seems that the Support Center, when looking for downloads, either isn't checking the versions of my drivers/software or isn't checking them properly.  For example, I one of the selections was for BIOS version A05, release date 7/20/10, yet if I look at Support Center's System Information for my computer under the General tab, the BIOS version is the same with a BIOS date (as opposed to release date) of 7/14/10.  I pretty certain it's the same BIOS. I'd welcome and appreciate any information about this problem.  Thanks!
Dell Support Center - Not Recognizing Already Installed Versions