The Toshiba A75 series has integrated video memory (shared). You can't upgrade this on a notebook like on a desktop (which can add an video card at any time with an available slot).
The HPZT3000 series and Compaq X1000 series are the same notebook. See X1000forums.com
I bought my X1360US at Circuit City for a decent price ($1299) in May 2004 but by doing it this way you pay more for RAM (you can order 256mb and add your own 512mb RAM stick for under $100 later) and you also are limiting your video memory, hard drive speed, and cpu options.
Also, the HPZT3000 custom online order right now has 3 things:
1) $100 instant discount
2) at least a $50 rebate -- a custom $100 rebate was available instead through 9/1/04.
3) free DVD ROM to CD-RW/DVD ROM upgrade
I recommend that you get the 64mb dedicated video, Intel Pentium M 725 1.6 (lowest Dothan), 5400 rpm hard drive (50% faster than 4200 -- note that your desktop has a 5400 or 7200 rpm hard drive already - if you don't upgrade the notebook hard drive it will be slower and at least 512mb RAM (but only order 256mb 1 stick or 512mb 1 stick and add your own later for less).
The Toshiba you should be comparing the HP/Compaq to is the M35 -- this has dedicated video (retail model is M35S456 with DVD burner) It is very close to the HP/Compaq in specifications but it has the new slick Trubrite LCD.
Note: Compusa has the worst return policies (restocking fees, etc) of anyone so I would recommend that you also look at Circuit City, Best Buy, etc if you insist on retail but you will save $ and have exactly the components you want if you go to hpshopping.com
See X1000forums.com for all the information on the instant rebate and rebates available now (for either the Compaq X1000 or HPZT3000 or the business twin HPnx7000).
The HPZT3000 weighs 6.5 pounds
The Toshiba M35 weighs 6.2 pounds
The Toshiba does run a bit hotter but it does have the Trubrite LCD which you have to see (XGA only). The HPZT3000/X1000 do not have the new HP Briteview equivalent bright LCD yet (also similar to Sony Xbrite).
If you really will never play any games or use any more demanding program then consider integrated video.
But otherwise, get dedicated video (at least 64mb is better and only costs $50 over 32mb dedicated if you order custom at HPshopping).
Also, you can get the Bluetooth module option for only $19 more ordering custom (add on to wi-fi Intel 2200b/g wireless). Many people want this option for synching to a PDA, using an Bluetooth mouse, using a bluetooth cell phone, etc (HP/Compaq)
You can get a USB bluetooth module to plug in externally but most people prefer internal and these cost much more later to purchase (up to $100 and over).
I've been reading through past posts and see info./comments regarding these notebooks and would be curious to get your thoughts on what I am considering and if you think the costs are reasonable and which you would recommend.
I'm getting a notebook to basically replace my desktop. I travel only occasionally so size and battery life are an issue, but most important is to get the best value I can -- the most for my money and I'd like to spend around $1200. I need for email, Excel spreadsheets, Powerpoint presentations, but don't really care about games, etc.
I'm considering the Toshiba A75-S206, Intel Pentium 4 Processor, processor speed 2.8 GHz, bus speed 533 MHz, and 512MB RAM for $1149 at CompUSA (http://www.compusa.com/products/product_info.asp?product_code=313044&pfp=BROWSE)
and the HP ZT3302US Intel Pentium M Processor, 1.5 GHz processor speed, 400 MHz bus speed, 256MB RAM for $1299 (http://www.compusa.com/products/product_info.asp?product_code=313569&pfp=srch1).
I've seen comments about getting custom and called Dell and the price point was a little higher than I want to go $1600. Also called HP and the guy recommended the ZV5220us for $1149 before shipping, etc. It's at about 8 pounds which is a little heavy. Toshiba also has this problem.
Also looked at Compaq online and it appears it's a little more expensive as well. I'm not techy and all this information is overwhelming. I'd like to get something tomorrow and am leaning toward buying at a store rather than ordering custom, waiting, etc.
Thoughts, suggestions greatly appreciated.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic