Recommended Tests

Hello guys i really need some help with my PLDT MYDSL PLAN1299 (512kbs) it's been already a week and still my connection is very slow.  I've already tried reformatting (Windows XP SP3) and other numerous tweaks here but still the same results. 

Here are my results :
Ps: I already did Cablenut Tweak using the calc at j79zlr.com, Used TCP Optimizer and DR.TCP Tweaks.  Ran CCleaner and Spyware Removal Tools(Ad-Aware) and Scanned for viruses (AVG).

1.
:::::::::::::::::.. Download Stats ..:::::::::::::::::
Download Connection is:: 272 Kbps about 0.3 Mbps (tested with 512 kB)
Download Speed is:: 33 kB/s
Tested From:: http://testmy.net/ (Main)
Test Time:: 2009/02/10 - 1:00am
Bottom Line:: 5X faster than 56K 1MB Download in 31.03 sec
Tested from a 512 kB file and took 15.438 seconds to complete
Download Diagnosis:: May need help : running at only 40.66 % of your hosts average (pldt.net)
D-Validation Link:: http://testmy.net/stats/id-MCZDKRGY2
User Agent:: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.20) Gecko/20081217 Firefox/2.0.0.20

2.
TCP/Web100 Network Diagnostic Tool v5.5.4a
click START to begin

** Starting test 1 of 1 **
Connected to: nitro.ucsc.edu  --  Using IPv4 address
Another client is currently being served, your test will begin within 45 seconds
Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done
checking for firewalls . . . . . . . . . . . . . . . . . . .  Done
running 10s outbound test (client-to-server [C2S]) . . . . . 153.0kB/s
running 10s inbound test (server-to-client [S2C]) . . . . . . 125.36kB/s
S2C throughput test: Received wrong type of the message
ERROR MSG: Server (S2C throughput test): Invalid S2C throughput received
S2C throughput test FAILED!
Your PC is connected to a Cable/DSL modem
Information: Other network traffic is congesting the link

click START to re-test


3.
http://www.dslreports.com/tweakr/block:9ab0bc?service=dsl&speed=512&os=winXP&via=normal