If it is BRAND NEW, boxed, with all the manuals, polystyrene inserts, disks etc.
FLOG IT!Flog (sell) it to a collector or a museum. Spend some time researching exactly which model you have, revision motherboard etc. If you use ebay dont scrimp on your advert, use your own webhosting for extra large photographs, as many as you feel is good, show the seals if they are intact, serial number etc.
Once sold for 4x or 5x what you paid, use the proceeds to get any other Amiga (much higher spec with hard drive and accelerator) you like :-)
Can this thing be "modernized"? Can I make it useable for say web surfing/ basic image editing / email? I know it will never be a power house and replace my main system, but If I could set up a terminal to browse the web, check email, and so on without having to worry about virus's etc
It is not economically viable to upgrade an A2000 (or any Amiga for that matter) to the level you need to do what you ask. It would have to be a labour of love.
To begin with you would need a Phase5 Blizzard A2060 card to come close and they cost perhaps $400 USD and an Ethernet card which is perhaps another $150 + Graphics card $300
If you want to use it just for retrogaming you need to get just a SCSI card with memory upgrade. I would recommend a GVP Impact Series II HC8+
http://www.amiga-hardware.com/showhardware.cgi?HARDID=1196They are very common and so very cheap, 8Mbytes of 30-pin simms also very cheap and SCSI-1 hard drive again very cheap.
With a hard drive and more RAM your Amiga is 100% more useful. (But no where near Web-capable).