It came with a 2GB SD card, but only Froyo and later supports installing apps to SD card. (it only has 128MB of built-in memory)
No, I haven't rooted it yet as rooting requires flashing on this model if it has the Eclair firmware installed. I'd rather just upgrade it if I need to flash it.
Alienware M11x R1 Netbook:
1.3GHz Core2 Duo U7300 (OC'd to 1.7GHz) | 8GB Corsair DDR3 1333MHz | nVIDIA GeForce GT 335M 1GB/Intel GMA 4500MHD Hyrbid Graphics System | Western Digital Scorpio Black 500GB | Microsoft Windows 7 Home Premium 64-bit
Microsoft Certified Desktop Support Technician | CompTIA A+ Certified