Depends on what version of BS you are using...

Normally you just reinstall... There are files that 'retain' your configurations and your pending (incomplete) downloads, so no worry, 'normally' !

But, we need more info from you...

Version of BS
Windows version
Memory
CPU
the usual...

Have you recently run any 'Registry Cleaner' or 'Plug-In Cleaner' programs ?
They could have roached some of your settings...

btw, if the BS version is 6, then me know nada... and never will !

__________________
Fusion for REAL!--CDex 1.51--Wackyuses--Bitzi - Check Files Before Download !--.mp3 File Name Change Problems? Try Rename-It!--Alternate PORTS--Avast- Anti-Virus--WindowWasher--IrfanView--PC Pitstop - Test your PC !--Mac OSX Troubleshooting--GO .ape ! - For 'Lossless' Audio Compression--Port :6346 - Test If It Is 'Blocked'--Cole2k Codecs--OldVersion - Newer isn't always better !
Nod32 - Free Virus Scan: Use ESET's Online Antivirus Scanner

Tomorrow's forecast:
Sunni in places, Shi'ite in others...