Hello, my Tecra has 256MB and am wondering if i can buy a 1GB laptop memory stick to pair with the 256MB. But I dont know how to open up the laptop, i tried reading the manual but doesn't mention anything about opening up the laptop.
I think that you can in general mix brands. Just so long as both brands are decent quality. Any brand worth buying will offer a lifetime warranty. I've had 2 laptops in which I upgraded with a different brand of memory that had the same basic specs and had no problems. A good place to look for different brands of laptop memory is www.newegg.com cause alot of people shop there and just about every brand they offer has a fair amount of user reviews that will help you decide which brand to get.
Newegg also has some one day sales that are pretty good. I got my 1 Gig of Kingmax memory for about 125$ including shipping and handling.