Two questions about USB to VGA adapters

[uncapitain]

Question 1) Can I use two USB to VGA external video card adapters at the same time? I have 3 monitors but my laptop only supports one external monitor (using VGA or HDMI)

Question 2) How good are the external video cards? For example, the http://www.frys.com/product/6060008?site=sr:SEARCH:MAIN_RSLT_PG or
http://www.frys.com/product/5620681?site=sr:SEARCH:MAIN_RSLT_PG
products. Is there a lot of lag on screens connected via the adapter? Im not trying to get an eyefinity gaming setup. Do youtube videos play at a reasonable speed? Do moving windows and the cursor also move at a reasonable speed?

Question 3) Which of the two products I listed above do you recommend?

My computer specs are:
Hp dv6-6091nr Entertainment PC
Windows 7 Home Premium 64-bit
Quad Core i7 2.0 Ghz
Amd Radeon HD 6770m
6 gb ram

Thanks

Sorry if I chose the wrong sub-section, I didn't know what to put it in.

 

[geekapproved]

I'm still trying to figure out the logic of a laptop with 3 desktop monitors.....what am I missing?

 

[uncapitain]

I'm still trying to figure out the logic of a laptop with 3 desktop monitors.....what am I missing?

Geekapproved, There are very few laptops that can display on three screens at a time. Which is why I know I'm going to have to use at least one usb to vga external video card adapter, which allows you to bypass the two monitor limit since it is an external video card.