Blackberry pearl 8100 as a tethered modem - once worked fine but not anymore

Question

For about a year upto late Sept 2008 I had been using my bb pearl 8100 as a tethered modem.  Although it was slow I was able to access the internet from my desktop pc.  But for some unknown reason in late Sept 2008 that all changed - i.e. I can longer access the internet from my desktop pc via the pearl - and neither I nor my ISP can work out what why. 
I have uninstalled and reinstalled bb desktop manager (three different versions, the latest being 4.2.2.6), I have updated my device software, I have updated the modem drivers, I have installed the desktop software on 2 other computers and connected the pearl but I continue to experience the same problem, that being that although I am able to establish a phone connection little or no data is being transmitted.  The best I have been able to acheive is sending about 35k of data and receiving about 2.5k over a 3 hour period.  On most other occassions no data is exchanged at all although a connection is established.  Has anyone else ever experienced anything like this?  If so, how (if you did) did you  resolve it?  I'd also welcome any suggestions from others who think they have a solution.  Thanks. J.

Answer 1

in windows XP you can try:
1. Select Start> Settings> Network Connections.
2. Double-click the New Connection Wizard. New Connection Wizard will open.
3. Click Next.
4. Select the option Connect to the Internet. Click Next.
5. Select Setup my connection manually. Click Next.
6. Select Connect using a dial-up modem. Click Next.
7. If the Select a Device screen appears, select the Modem - Standard Modem check box. Click Next.
8. In the ISP Name field, type a name for your connection. Click Next.
9. In the Phone number field, type * 99 #. Click Next.
10. Indicate which users will have access to the connection. Click Next.
11. Enter your user name and password provided by your service provider. Click Next.
12. Click Finish.
13. In the Connect window, click Properties.
14. In the Properties window, verify that Modem - Standard Modem appears beneath the Connect using heading, then click Configure.
15. In the Modem Configuration window, clear the Enable hardware flow control check box and make sure all of the other boxes are not checked above. Click OK.
16. In the Properties window, click OK
in Ubuntu, I can not try it but I've tried in XP and succeeded.... good luck