New Time Capsule: just use as external hard drive without other setup

Question

I have a brand new 2 Tb Time Capsule, and I need to move data to it manually (not as a backup) as soon as I can  to solve another problem. 
Can I do this without doing the full blown Time Capsule setup (which I've never done) ?  Just plug it in and wirelessly connect my MBP to it?
The other problem is 1 Tb external drive (G-Raid Mini)  that suddenly cannot be written to, and I need to offload the data (700 Gb of photos) and reformat it immediately.  There isn't enough room on the MBP and the USB connected 1 Tb  Iomega being used as a time machine, and I don't have any other Mac formatted hard drives.   This problem occurred I think because in order to get around an incompatibility problem with an Express Card CF Card Reader after loading Lion, I was advised to restart the MBP in 32 bit mode.  Next thing I know, my G-Raid with all my photos can't be written to. 
Thank you in advance for your help.
HenryTD

Answer 1

Tesserax:
Thank you very much for your response. 
I got brave last night, and plugged in the TC, and ran an Ethernet cable from the Switch that connects via an in the wall Ethernet cable to the main VZ FiOS Router (which also propagates a private wireless network).  I just answered the questions in the setup, which led me to setting up a secured wireless network, and  configuring the router part of the TC as a Bridge.  Then I wirelessly connected the MBP to this new network, and began moving some files.
Before doing that I had unplugged the cable from the MPB to the Switch (since instinctively I thought that would be a conflict with the wireless connection via the TC bridge to that switch, and the router behind it, but I'm not sure I'm right about that).
However, I later realized I should have just plugged that cable into the TC, and used that connection to move files (and connect to the Internet), since the wireless connection has been SLOW: about 1 min 40 seconds for each Gb. And it just stops sometimes (I guess because of competition with the traffic from the MBP to the Internet). 
I'm moving 370 Gb off the Iomega that came from the G-Raid since I needed to clear space on the Iomega because it still has the duty of doing the Time Machine backup.  I did't want that to run out of disk space on it since I had copied some of what was on the G-Raid there before I realized that the MacBk HD plus the Iomega were not going to have enough room to empty the G-Raid Mini. 
As soon as this operation is finished, I'll change the connection from MPB to TC to wired, and start copying directly from the G-Raid  everything that hasn't already been copied somewhere else directly to the Time Capsule storage.  Instinct says I shouldn't disturb the present coping process, much as I'd like to speed things up.
As to your suggestion that I just plug the G-Raid into the TC, it's connection to the MBP is FW800.  It also has a USB 2.0 port, and an E-SATA port.  Wouldn't FW800 to MPB and MBP to TC via Ethernet be faster than a direct USB 2.0 connection? 
How do I control what happens between the TC and drives plugged into it from the MBP (a novice kind of question, but I find it confusing that the TC is both a router, and an attached storage device)?  Do I see it from the MBP as if it were directly attached to the MBP?
Do you (or any other forum member reading this) have any suggestions or comments about the above?  Do you think my observations are correct?
Thanks in advance for any comments or help.
HenryTD