Acer Aspire AS1410-2285 Celeron SU2300(1.2GHz) 11.6" 1366 x 768 LED backlight display has HDMI output.
GMA 4500MHD graphics supports max resolution of 2560 x 1600Aspire AS1410 reviewSamsung N510 Atom N280 Ion graphics
also has HDMI output and the Ion graphics will handle 1080 HD video decoding. Max resolution for Ion graphics is 2560 x 1600.HP Mini 311
has Ion graphics and HDMI output.Dell Mini10 had HDMI output
but it's GMA 945 graphics isnt well suited to 1080 HD video decoding.
Just because a netbook has a display resolution of 1024 x 600 doesnt mean it can't output a 1920x1080 (or higher) signal to an external display/monitor/TV. The Bestbuy guys were wrong again, or you misunderstood what they were telling you.