Any architecture software you use at uni is likely to be licensed to their computers only, in my experience. The only engineering program I'm allowed to put on my computer so far is one that was written by a guy in the department; a very basic program modelling flow through two tanks. ASPEN, MATLAB etc are all on the uni computers.
It sounds to me like you just need a good laptop :) I don't know anything about cell phones (I just had to change my phone for the first time in four years and bought the most basic mobile I could), but for a laptop I would probably recommend something with 2GB RAM or more (go for 3 or 4 GB if you can get it!), 15"+ screen and a large (160GB min) hard disk. That will let you do the things you need to do and as you're not, say, a gamer, you won't need to worry too much about what your graphics card is.
When it comes to Microsoft Office, take a look out for special offers for students. Just over a year ago I was able to get a great deal - Microsoft Office Ultimate (i.e. All the programs) for just £40, perpetual license! This Christmas I bought Office Home and Student (Word, Excel, Powerpoint, OneNote) for my mum for about £60.
However, if you don't specifically want the functionality of Microsoft Office you could always look into freeware options such as OpenOffice. These are free programs available on the internet.
If you believe everything you read, better not read.