Newbie is getting time-out errors

[Pluto101]

I'm quite litterally brand new at this... I've set up an ftp server just for the heck of it, and two things have gone wrong (both could be related, I think I can solve only one)

#1: When I try to get to it from my school's servers, Internet Explorer freezes. That's it. I think it might be some weird function of the firewall, but normally if the firewall/filter blocks something, it give a "Bess can't go there" site. If it's the firewall, I'll leave be, but...

#2: I'm using eftp, and whenever I try to log on, even from my machine, it gives me a 501 CWD failed. No permission. What does this mean? It was working before, I'm not sure I know what I did, I'm sorry if I sound like an idiot.

#3: When it was working, everyone but me timed out when trying to access my server. I did a little trace route from tracert.com, and these were the results:
1 ar10-a3120s1.n54ny.ip.att.net (12.125.56.133) 1.70 ms 1.21 ms 1.54 ms
2 gbr1-a90s11.n54ny.ip.att.net (12.123.0.222) 1.50 ms 1.77 ms 1.27 ms
3 gar1-p360.n54ny.ip.att.net (12.123.1.129) 1.51 ms 1.51 ms 2.14 ms
4 12.244.73.97 (12.244.73.97) 3.53 ms 3.67 ms 3.77 ms
5 12.244.70.153 (12.244.70.153) 4.11 ms 10.3 ms 4.66 ms
6 10.174.32.1 (10.174.32.1) 4.64 ms 8.2 ms 7.51 ms

After that it times out. I've got the DNS server set up properly, because ping, etc. is translating the domain name properly (mystuff.yi.org), and I have never been good at anything networking & internet related, so I throw myself upon the mercy of the forum. Thanks in advance!

[Pluto101]

Sorry, solved second prob: Somehow, the list access didn't get checked, so the user would get denied. I don't know if I'm making sense, but #2 is solved.