[Viewsonic ViewPad 7 & Variants] Letitride:
YES - excellent, well done & pat yourself on the shoulder for success. So you are still running your stock rom, correct - I would make sure Titanium Backup, Astro or ES File Explorer and/or Root Explorer are installed, and, get comfortable with using them. Froyo Enhanced would be a safe 1st. custom ROM to try, very close to stock with tweaks & minor customization, easy to adapt for one's own.

As far as A2SD is concerned, if you are referring to DT's verison, I do not have any problems with it at all running on ext3 partition with the EU V1.7 ITE ROM - it's best to upgrade CWM to v5.x first and be prepared for the mSD card to be reformatted, thus losing any & all stored data and having to restore it from a safe backup location (i.e. from the PC or portable HDD, usb device, etc.) It's a bit tricky for ITE hardware pads, but several others using my detailed notes also managed to do it - (and, that's why it's so important to have backup, run TB backup and CWM backup, and, to make sure your 3G and WiFi settings are saved & working along the way)

I tried several other App2SD apps on the "Market" and they're okay, the last one that I used was App2SD by Sam Lu (as listed) but even that was limited as it wasn't using ext3 or ext4 - whereas DT's A2SD did it with ease and really freed up quite a bit (I have about 60 Apps loaded plus nearly all of the standard Google Apps like Talk, Voice, Gmail, Maps/Navigation, Facebook along with Twitter & YouTube installed - which easily overwhelmed the pad's resources otherwise.) I would recommend installing it - just make it a habit to run CWM Backup & TB Backup at major milestones or checkpoints, so that if something go wrong, just go into Recovery & restore the last working one.

The mSD card is inexpensive enough vs. the price paid for the pad itself, so I'm okay if I need to replace it sooner - I use a 2nd. mSD card (smaller at 8GB) to test & experiment, and, once I'm comfortable with major changes made & have time, I transition back to the bigger 16G mSD card.

Additional ideas: install alternate launchers (Go EX, ADW & my preferred - VTL.Launcher) and keyboard (Gingerbread, Go or Swype beta (via registration & emailed link to download) and Sense-themed Fancy Widgets, and, Dolphin HD browser, and WidgetSoid, Moon+ Reader, and, of course, Lookout Security. These & others of your own choosing will give you hours of fun in practical hands-on experimentation.

All in all, my configuration has been stable & solid for the past month, and I have yet run into any problems with freezes or FC, lost of data or issues with either the hardware or ROM - my "regular" smartphone is faster, quicker & fancier, but there's something about the 7" screen size, it keep me occupied & entertained for hours - and battery life while on standby mode is quite good.

Lastly, not much one can do about that autorun feature on the PC when the pad is connected via the mini-usb cable, I just hit the Esc key or Cancel to bypass all those messages & prompts (it's just like other usb devices & mobile phones, once they sync. up with the pc, the Apps are awaken and ....)

Have fun over the weekend with the pad & experiment :D