IE won't connect but Firefox will

I am running vista 32bit with service pack 1: for months I have been running COMODO firewall. Over the holidays a family member gave me Symantec 2009, felt obligated to use it. Big mistake. Uninstalled COMODO and installed Symantec, the install did not go well couldn't get it to work, uninstalled Symantec, then I couldn't get COMODO to reinstall, it says I have to uninstall previous version. Now I am using Windows Firewall, I am behind a router, using a virus and maleware, so I'm not to concerned, Now the problem, Firefox runs great, but I can't get Internet Explorer to connect, (some of you might still be saying, what's the problem) I even downloaded IE 8 and installed it thinking it might fix the problem. I am doing tutorials on line, in order to make them work I have to go into internet options in IE and enable "Allow script-initiated window without size or position constraints." I can't find a setting like that in Firefox.

 

I have this issue fixed, but things are still not right on my computer. The problem is COMODO. It dose not uninstall correctly, I found the following info in their forums and after following them I could not connect to the net at all, I undid them and now IE works.
Beware if you install COMODO, you may be stuck with the rest of your life.

1. Disconnect your computer from the internet, and disable/turn off all Active security software such as Antivirus, Antispyware, HIPS.
2. Open the firewall application
2a. On the Summary page, change Security Level to "Allow All"
2b. Go to Security/Advanced/Miscellaneous, and uncheck the box "Protect Own Registry Keys" then OK.
3. Right-click the systray icon, and select "Exit." Follow the prompts to close the application interface (Note: this does not stop the core of the firewall)
4. Go to Start/Run, type in "msconfig" and go to the Startup tab
4a. Uncheck the box next to the Comodo Firewall/CPF.exe entry; Apply, and close.
4b. Don't reboot yet.
5. Go to Start/Run, type in "services.msc"
5a. Find the entry for "Comodo Application Agent"
5b. Double-click this entry to open the Properties window and change the Startup Type to "Disabled." Apply. OK.
5c. Reboot your computer
6. Go to Start/All Programs, scroll to Comodo/Firewall and select "Uninstall;" follow the prompts to uninstall the firewall. Reboot computer when finished.
7. Go to Start/Run, type in "devmgmt.msc"
7a. Go to View/Show Hidden Devices; scroll to Non-PlugNPlay Drivers
7b. Make sure there are no entries for Comodo Application Engine and Comodo Network Engine. If they are not there, continue to step 8
7b1. If there are, right-click and select "Disable" for each one, and Reboot your computer.
7b2. You will then repeat step 7, 7a, 7b, and this time right-click and select "Uninstall" for each one, and Reboot your computer.
8. Clean the registry of any miscellaneous, leftover keys pertaining to Comodo Firewall. You can do this by either of the following:
8a. Go to Start/Run, type "regedit"
8a1. Go to Edit/Find and type in "Comodo"
8a2. Delete those entries (this presumes that you only have their firewall installed)
8b. Use a free utility like RegSeeker, ccleaner, etc to clean out the registry.
Note: If you are not comfortable working in the "guts" of Windows, I recommend 8b over 8a. In either case, be sure to make backups (in regedit this is the "Export" feature; in any utility software like RegSeeker, there should be an option box to create a backup prior to deletion).
9. Reboot your computer. The Comodo Firewall should be gone.