Dell Minis and all other basic Netbooks are severely limited !
Netbooks are very good for Internet BROWSING not so much for playing online. They are not that good for MS Office ( screen size, cramped keyboard ). They are the "pits" (not that good at all) for iTunes and similar multimedia apps as they are not built for it.
ALL the consumer-level Netbooks* have NO internal CD/DVD drives, NO upgrade path and the following MAXIMUM memory limits:
Linux based: 512 MBs
XP based: 1 GB (some RARE exceptions have 1.5 GBs)
* There are newer so-called high-end Netbooks that come with more but they are generally pricier than laptops.
Hard drives models average 80 GBs ( some have 160 GBs )
Other models use SSD** (Solid State Drive) with no moving parts ( good when you move a lot as they are more "solid" (pun intended) ) but these are smaller in GBs and higher in cost.
** This is "similar" to the way USB memory stick work.
You should get a affordable (not cheap) "Laptop" not a "Netbook" (you CAN get a few good ones at prices that would make a Netbook blush). The best way to find these is by doing research.
As laptop specs change often, it is good to get non-vendor/non-partisan/non-groupie information so you should do some checking on these review/guide sites to help fine tune your search.
At each site, start by checking some models and then compare them with others (or against each other) by choosing different options using boxes and drop down menus to customize the search and get what you want in your laptop ( there is even a way on some of those sites to look by inputting the price you are willing to pay to minimize the impact on your wallet ).
Your time will not be wasted (after all, you get all this from the comfort of your home) and you should find something to your liking and budget.
Stop 01 here: http://reviews.cnet.com/laptops/?tag=hdr;snav
Stop 02 here: http://www.pcworld.com/products/computers/laptops.html
Stop 03 here: http://review.zdnet.com/filter/laptops?categoryId=3121
Stop 04 here: http://www.notebookreview.com/
Good luck on your research.