You would need it, but you would need to activate it. In that case, you would destroy your only license if it doesn't work right. Here's the one I found:
AcerPanAm.com/us
The Realtek in the BIOS is LAN, that's nothing. Perform a manual Windows Update. When you get through the preliminary stuff, click Custom. On the left, select the driver downloads and select and install them all.
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Repair Windows XP Guide ---
Resolutions
Crazy Computer that I'm saving up for::Antec P180 Case;PC Pwr&Cooling 1kW Quad SLI PSU;Asus P5N32-SLI SE Deluxe;Intel Core2 XE X6800;Corsair TWIN2XP2048 2GB PC2-6400 DDR2 RAM;2xAsus GeForce 7950 GX2;BFG PhysX Accel.;IBM DVD-RAM/Plextor DVD±RW;Seagate 750GB HD 7200RPM;WDX 150GB 10000RPM;Vigor Monsoon TEC Cooler